Portage Learning BIOD 152 A&P 2 Final Exam 2023/2024

Portage Learning BIOD 152 A&P 2 Final Exam 2023/2024 Identify the parts of the neuron shown in the diagram below a. dendrite b. cell body c. nucleus List the four parts of the human brain The human brain is made up of the cerebral hemispheres, diencephalon, brain stem, andcerebellum. List and describe the 3 meninges of the human brain. The leathery dura mater is the double-layered outer meninx. The middle arachnoid meninx is a loose layer separated from the dura mater by the subduralspace. The inner pia mater meninx is composed of connective tissue and is tightly attached to the brain. Answer the following three questions: What blood cell contains hemoglobin?Red blood cells The P wave represents what? Atrial depolarization (systole) Define Systole. the heart is contracting and ejecting blood into circulation List 3 functions of the female reproductive system. The female reproductive system has the following functions: eggs and estrogen production aswell as serving as the site for the development of a baby after fertilization of an egg occurs. Name the three types of ligaments associated with the ovaries and the function of each. The ovaries are held in place by the suspensory, ovarian, and broad ligaments. The suspensory ligaments attach the ovaries to the pelvis wall. The ovarian ligaments attach the ovaries to the uterus. The broad ligaments hold the ovaries in place in the pelvis. Tell whether each of the following describes mitosis or meiosis: Occurs only to produce new offspring meiosis Two division cycles meiosis No crossing-over occurs mitosis Four daughter cells are produced meiosis Produces cells which are not genetically identical to the parent meiosis Each tRNA anticodon codes for one type of : C a. protein b. ribosome c. amino acid d. enzyme Does transcription or translation occur primarily at the ribosome? Translation Which requires RNA polymerase, transcription or translation? Transcription Are amino acids bonded together during translation or transcription? Translation If a codon reads: GAC, what is the correct anticodon? CUG Describe the shape, size and weight of a human adult kidney. The adult kidney is bean shaped, about the size of a can of soup and weighs about 5 ounces. Describe the structure and function of the renal pelvis. The renal pelvis is the centermost section of the kidney and is a funnel-shaped tube that connectsto the ureter. Extensions of the pelvis called calyces collect urine which drains into the renal pelvis and theninto the ureter. You are treating a patient in the hospital who was admitted with signs of orthostatic hypotension(decreased blood pressure, increased heart rate, lightheaded) secondary to having severe diarrhea and dehydration. Which of the following would you expect to be their GFR (glomerular filtrationrate) given their symptoms? Explain your answer. a. 85 ml/min. b. 120 ml/min. c. 142 ml/min a. 85 ml/min. Dehydration decreases glomerular filtration rate. Explain, in detail, how the cardiovascular baroceptors work to maintain blood pressure. The cardiovascular baroceptors monitor and regulate blood volume (which is influenced directly by Na+ ion concentration) to maintain blood pressure. If blood volume (and consequently blood pressure) rises, the baroceptors signal the kidney causing a dramatic increase in the filtration rate,increasing the output of water and Na+ which reduces blood volume to quickly normalize the pressure. Explain, in detail, how the kidneys act to regulate pH by the excretion or reabsorption ofbicarbonate. The major kidney acid-base regulating process is by way of excreting or reabsorbing bicarbonateion. Examination of the equilibrium equation sequence below will demonstrate that loss of a bicarbonate (HCO3-) ion from the body amounts to the gain of H+ since the reactions will shift to the right. Conversely, gain of a bicarbonate (HCO3-) ion amounts to the loss of H+ since the reactions willshift to the right. Thus, renal excretion of bicarbonate results in retention of H+, while reabsorbing bicarbonate will result in excretion of H+. Which nervous system contains the sympathetic and parasympathetic divisions? D a. Central nervous system b. Peripheral nervous system c. Somatic nervous system d. Autonomic nervous system e. Sympathetic nervous system f. Parasympathetic nervous system If you were hiking in the woods and came across a mountain lion, which division of yournervous system would have increased activity? Explain your answer. The sympathetic nervous system would have increased activity as it is responsible for preparingour bodies to respond to stressful situations. This type of neuroglial cell allows fluid exchange between brain, spinal cord and cerebrospinalfluid. A a. Ependymal cell b. Oligodendrocyte c. Astrocyte d. Microglial cell This type of neuron transmits impulses from the brain to the spinal cord. F a. Multipolar neuron b. Bipolar neuron c. Unipolar neuron d. Sensory neuron e. Motor neuron f. Interneuron True or False: A sensory neuron is signaling the body of EXTREME pain. This means that thestrength of the action potential is greater than usual. False – there is no variation in the strength of action potentials. There is variation in the numberof neurons firing. Describe what is occurring at the axon cell membrane during the phase described in section4 of the diagram. The potassium gates that open during repolarization are slow to close and there is generallyan afterpolarization undershoot of the potential. The Glossopharyngeal nerve is one of the cranial nerves. What type of nerve is it and what does itcontrol? The Glossopharyngeal nerve is a motor and sensory nerve which controls swallowing and taste. The femoral nerve is one of spinal nerves. What is its function? The femoral nerve supplies motor fibers to the hip flexors and knee extensors. List the 3 parts of the diencephalon The diencephalon is made up of the thalamus, hypothalamus, and epithalamus. Describe the functions of the 4 lobes of the brain. The frontal lobe controls motor functions. The parietal lobe receives information from receptors located in the skin, such as those for touch,pressure, and pain. The occipital lobe interprets visual input. The temporal lobe has sensory areas for hearing and smelling. Explain in detail the taste process. Food or drink sits on surface of the tongue activating taste buds. Chemical molecules are dissolved into saliva. Taste receptors are stimulated by gustatory hairs. Sensory information is sent to the brain along facial and glossopharyngeal nerves and impulses are sent to the thalamusand parietal lobe. Describe in detail the olfactory system. Olfactory hairs form a thin layer mucous which covers the surface of the epithelium and airbornechemical substances dissolve for detection. One of your patients has suffered a stroke. You notice that their gait is very unsteady. It almostappears as if they are intoxicated. What portion of the brain was most likely affected by the stroke? Explain your answer. The cerebellum was most like affected since it is responsible for coordinating body movementsand motor activities If someone sustains an injury to the anterior spinal cord, would you be more likely to seemuscular weakness/paralysis or decreased sensation? Explain your answer. You would be more likely to see muscular weakness because motor neurons exit the spinal cordanteriorly. Using the terms given below, put each of the following vessels and structures in the order in which the blood travels through them from a capillary in the finger to the lungs to be oxygenatedand then back to a capillary in the finger. Terms: right ventricle, artery, vein, left ventricle, venule, right atrium, arteriole, left atrium, vena cava,aorta, pulmonary artery, pulmonary vein, tricuspid valve, mitral valve, aortic valve, pulmonic valve Start Capillary in finger 1 venule 2 vein 3 vena cava 4 right atrium 5 tricuspid valve 6 right ventricle 7 pulmonic valve 8 pulmonary artery Oxygenation Lungs 9 pulmonary vein 10 left atrium 11 mitral valve 12 left ventrical 13 aortic valve 14 aorta 15 artery 16 arteriole Finish Capillary in finger Which vessels actually feed the heart itself?c A. aorta B. cardiac vessels C. coronary arteries D. vena cava The electrical impulse that controls cardiac muscle contraction physically originates in:Α A. R atrium B. L ventricle C. Both ventricles D. The septum Which vessel should have the strongest pulse?d A. Artery in the finger B. superior vena cava C. vein in the leg D. Artery in the neck Three functions of the lymphatic system include: take extra tissue fluid and returns it to the bloodstream absorb fat and transport it to the bloodstream defends against disease What cavity in the thoracic cavity contains the heart?pericardial cavity A patient is suspected to have pulmonary edema due to heart failure. Which side of the heartwould be in failure? Explain your answer. The left side of the heart would be in failure. When the left side of the heart can't pump blood outinto body tissue, blood and fluid will build up and flow back into the lungs. A patient has a diagnosis of right sided heart failure. Which of the following signs/symptomswould they most likely present with? a. Shortness of breath at rest b. Swollen ankles c. All of the above b Explain the difference between plasma and serum. serum lacks the clotting proteins that plasma contains Which one of the following statements about blood vessel structure and function is false?d A. Veins are more compliant than arteries B. The aorta and other large arteries serve as a “pump” for the circulatory system C. Arterioles are small vessels whose resistance to blood flow can be varied D. Arterioles, capillaries, and veins all have valves that allow only one-way flow of blood Which WBC cell stains dark blue/purple? basophils A patient is experiencing pooling of blood in their lower legs due to venous insufficiency (a.k.a. bad valves.) What is a physical exercise that they could do to help assist in increasing the bloodflow back to the heart? Explain your answer. Ankle pumps, walking, or calf raises would be sufficient in order to use calf muscles to pushblood upward preventing back flow. List the four major heart valves. mitral tricuspid aortic pulomnary What is a sphygmomanometer used to measure?blood pressure The T wave represents what? ventricular repolarization and diastole Explain in detail why it may take longer for you to fight off the flu virus the first time this seasonthan it would if you caught the same strain a second time. Once you have had the flu, your immune system will create memory B cells and produce theantibodies to fight against the strain the next time you are exposed. Which type of immune cell continues to produce a small amount of antibody after the infection isover: a. Killer T cells b. memory T cells c. memory B cells d. cytokines c Interferon inhibits what type of infectious Explain why antibodies are considered a specific immune response:antibodies react with specific antigens or foreign molecules How many chromosomes of what type are possessed by a female and a male?Male = 1 x and 1 y chromosome Female = 2 x chromosomes Gender is determined by which parent's sex cell?The fathers sperm cell A pregnant woman is experiencing sudden sharp groin pain, based upon location of hersymptoms, which of the following ligaments is being affected? a. Broad ligament b. Uterosacral ligament c. Round ligament c A breastfeeding mother becomes pregnant with another child. The pediatrician recommends thatshe supplement her nursing child with formula. Explain why this recommendation was made. Prolactin is necessary for milk production, which can be suppressed by estrogen and progesterone levels. During pregnancy estrogen and progesterone levels increase which willcompromise her milk supple. List the 3 sections of the fallopian tubes. infundibulum ampulla isthmus List the 3 coats of the fallopian tubes. serous coat middle muscular coat inner mucousa coat An older male patient reports to his doctor that he has recently been experiencing difficulty withurination. What might the doctor suspect is the problem? Explain your answer given what you know from the module in regards to the male anatomy. The doctor may suspect that he is experiencing side effects of an enlarged prostate. The prostateis located closely to the male urethra and when it is enlarged, it make urination more difficult. 2nd fetus begins to suck and blink 1st heart forms and begins to pump blood 3rd fat develops under the skin When does pregnancy begin? pregnancy begins once an egg has been fertilized by sperm and forms a zygote. Explain, in detail, the fertilization of an egg by a sperm. When in the oviducts, an egg releases a chemical which attracts sperm. Once sperm reach an egg, sperm begins releasing enzymes to break the follicle cells around the egg. When the follicle cells are broken apart, more sperm begin to release acrosomal enzymes in order to make a hole inthe egg membrane to allow a sperm to combine with the egg. Once the sperm has combined withthe egg, the eggs membrane begins a chemical change in prevention of other sperm being able to penetrate. Trace the path of sperm from their site of production to the outside of the body. Production begins in the testes at the epdidymis. When mature, sperm is sent to vas deferens viamuscular contracitons. Vas deferens connects with seminal vesicle and forms the ejaculatory duct. The ejaculatory duct connects to the urethra which allows sperm to exit the penis. List and describe the location of the 3 sections of the male urethra. prostatic = surround by prostate gland membranous = begin at end of prostatic urethra and travels to penis spongy = runs hrough penis and opens to the outside of the external offrise What is the function of the placenta? Since the umbilical cord connects to the placenta, the placentas job is to provide nutrition,respiratory, and endocrine functions for the embryo. Why does sterility occur if the testes do not descend? The testes have to be located outside of the body in order for sperm to be viable due to themneeding an environmental temperature lower than that of our normal body temperature. Structure: Sperm midpiece l. Supplies locomotive energy for spermVas deferens a. Connects seminal vesicle to ejaculatory duct Bulbourethral gland h. Secretes urine-clearing mucus Endoderm c. Liver producing layer of blastocyst Description: a. Connects seminal vesicle to ejaculatory duct b. Contains enzymes that break down egg membrane c. Liver producing layer of blastocyst d. Muscle producing layer of blastocyst e. Runs through penis to external opening f. Secretes alkaline fluid to increase sperm motility g. Secretes fructose as part of semen h. Secretes urine-clearing mucus i. Skin producing layer of blastocyst j. Sperm maturation site k. Sperm-producing stem cells l. Supplies locomotive energy for sperm While watching a single cell divide, you notice that it has produced two daughter cells which then divide to produce a total of four cells. Each of those four cells is genetically identical to theoriginal single cell. Have you observed mitosis or meiosis? mitosis In a cell there are 20 double stranded chromosomes. How many chromatids are there?20 x 2= 40 Meiosis produces daughter cells which are The haploid number contains two chromosomes of each Sex cells are diploid. false Fill in the blank: The diploid number in humans is 46 A cell has 36 chromosomes. After it divides by mitosis, how many chromosomes will be in eachcell? 36 Occurs only to produce new offspring meiosis One division cycle mitosis Crossing-over occurs meisis Four daughter cells are produced. meiosis Produces cells which are genetically identical to the parent mitosis The spindle begins to form. prophase Chromatids separate and move toward opposite poles. anaphase The sister chromatids line up in the center of the cell. metaphase Cytokinesis occurs. telophase The number of homologous pairs in humans is 22 For the following four questions on this page, answer true or false: Each homologous pair is made of chromosomes of the same length. TRUE Homologous pairs are present in haploid cells. FALSE Homologous pairs have their centromere at the same site. TRUE Homologous pairs are required for crossing-over to occur. TRUE Based upon what you know from the module, explain why siblings with the same biologicalparents are not identical. Since crossing-over occurs during meiosis, this allows for diversity and variation betweenoffspring. What is the benefit of sexual reproduction occurring via meiosis as opposed to mitosis?Meiosis allows variability of offspring and allows adaptations to occur Break the polypeptide chain down into individual codons. AUGAAAGCCGCACACCAUAACUAG AUG AAA GCC GCA CAC CAU AAC UAG Each tRNA anticodon codes for one type of :C a. protein b. ribosome c. amino acid d. enzyme Does transcription or translation occur primarily at the ribosome?Translation Which requires RNA polymerase, transcription or translation?Transcription Are amino acids bonded together during translation or transcription?Translation If a codon reads: GAC, what is the correct anticodon?CUG The ribosome attaches to the mRNA strandinitiation A “stop” codon is reached on the mRNAtermination Peptide bonds form between two amino ation Methionine is important in this processinitiation The ribosome continues to slide along the mRNA ation Describe the shape, size and weight of a human adult shape similar to size of a can of soup about 5 oz Describe the structure and function of the renal pelvis.a funnel shape tube that connects the ureter Structure: 1. Collecting duct l. Influenced by aldosterone to reabsorb more water 2. Glomerulus p. Network of capillaries in the renal corpuscle 3. Loop of Henle a. Allows water and salt loss to regulate urine concentration 4. Urethra i. Contains two sphincters Description: a. Allows water and salt loss to regulate urine concentration b. Basic functional unit of kidney c. Capillaries associated with juxtamedullary nephrons d. Carries out fluid homeostasis e. Center region of urinary bladder f. Connects glomerulus to Loop of Henle g. Connects kidney to bladder h. Connects Loop of Henle to collecting ducts i. Contains two sphincters j. Funnel-shaped collecting region of kidney k. Holds kidney in place in abdominal cavity l. Influenced by aldosterone to reabsorb more water m. Kidney location of glomerulus n. Kidney location of Loop of Henle o. Low-pressure capillaries that follow nephron tubules p. Network of capillaries in the renal corpuscle q. Outer skin of kidney r. Sits atop kidney s. Sphincter which prevents backward flow of urine toward kidney t. Stores urine for later disposal What are the 3 major processes by which the nephron is able to carry out its functions?filters blood reabsords materials that are neededexcretes urine What is unique about the glomerular capillaries? they are the only capillaries within the body that are between two arterioles instead of an arteryand vien You are treating a patient in the hospital who was admitted with signs of orthostatic hypotension (decreased blood pressure, increased heart rate, lightheaded) secondary to having severe diarrheaand dehydration. Which of the following would you expect to be their GFR (glomerular filtrationrate) given their symptoms? Explain your answer. a. 85 ml/min. b. 120 ml/min. c. 142 ml/min a. 85 ml/min. Dehydration decreases glomerular filtration rate. Name and describe the 3 types capillaries associated with the lar = filters fluid and solutes out of blood peritubular = absorption of and reclaiming water and solutesvasa recta = floow loops of henle Where does the greatest amount of renal tubular reabsorption occur and how much water andNa+ ion are absorbed in that portion of the renal tubules? in the proximal convulauted tubular cells65% Na+ and 65% water Identify the parts of the urinary system/nephron shown in the diagrams below. A1. Kidney B1. Renal corpuscle B4. Distal tubule Describe how urine concentration and volume is altered and why it is is altered by the kidneys in order to maintain a constant concentration of fluids Describe the action of a diuretic, list the four mechanisms by which they operate and a specificexample of each of the 4 types. diuretics increase the flow of urine causing more frequent urination -glucose causes osmotic re absorption of water -diuretic drugs decrease Na+ re absorption -caffeine causes renal tubules diameter to increase resulting in an increase of urine flow -alcohol inhibits release of ADH If a patient is dehydrated would you expect a higher or lower amount of ADH in their blood?Explain your answer. a higher amount as this is the bodys natural response to dehydration Describe the structures within and arrangement of the ureter which prevents urine from flowingbackward toward the kidney. The ureters descend into the bottom of the bladder and sphincters prevent urine frombackflowing to the kidney Describe how the urethra functions to control the flow of urine from the bladder. involuntary controlled sphincters keep the urethra closed to prevent urine from exiting thebladder voluntary external sphincters around the urethra go through the pelvic floor region allowingurination Identify the parts of the urinary bladder shown in the diagram below. 2. Detrusor muscle 4. Fibrous connective tissue 6. Trigone Rank the following people in regards to the percentage of water in their body composition (assume that they are all healthy individuals) in a vertical list from lowest (at the top) to greatest(at the bottom). a 45 year old male a 23 year old female an 85 year old male a 6 month old female 85 year old male 45 year old male 23 year old female 6 month old female Which fluid (intracellular, interstitial, blood plasma) contains the greater concentration of HCO3-(bicarbonate); which contains the greater concentration of HPO4-2 (hydrogen phosphate); which contains the greater concentration of protein? (more than 1 may apply.) Interstitial fluid contains greater concentration of HC03Intracellular fluid greater concentration of HC04 blood plasma contain greater concentration of protein Describe how each of the water balance regulation mechanisms responds to a decrease in plasmavolume. When plasma volume decreases, the thirst center is activated, causing one to want to drink more. ADH is releases making the kidneys conserve water to release a more concentrated urine. Describe the treatment for water intoxication and how this works to correct the condition. IV treatment with hyper tonic saline solution is necessary to pull the excess amount of waterfrom the cells Explain, in detail, how the cardiovascular baroceptors work to maintain blood pressure. If and when the blood pressure rises, the baroceptors send a signal to the kidney which causes anintense increase in filtration rate and increases the output of water and Na+ to reduce blood volume and quickly cause blood pressure to return to normal. Explain in detail, how aldosterone acts to maintain potassium balance. It triggers the adrenal cortex when potassium levels increases which causes an excretion ofpotassium, ridding of the extra, to maintain balance. If someone is experiencing chronic low levels of aldosterone, what dietary change could theymake that could help increase aldosterone production? Explain your answer. They could increase the amount of potassium rich food that they eat. A high level of potassium inthe blood triggers the release of aldosterone. Explain, in detail, how the interstitial and plasma bicarbonate buffer system acts to minimize pHchanges. If free H+ is released, bicarbonates reaction is to bind it as carbonic acid as follows: H+ + HCO3 - →H2 CO3 If OH- is released, cabonic acids reaction is to bind with it in order to covert it to bicarbonate asfollows: OH- + H2 CO3 → HCO3 - List the 3 major chemical buffer systems of the body and the body compartment or system inwhich they operate. bicarbonate system = main buffer of interstitial / plasma fluidphosphate system= 1 buffer in the urine / intracellular fluid protein system = main intracellular fluid buffer List the 3 ways in which the pH of blood is regulated.3 chemical buffer systems brain stem respiratory centerrenal system Normal values for blood plasma are: pH = 7.35-7.45, PCO2 = 35-45 mm, HCO3- = 22-26 mEq/L If the patient has blood plasma vales as follows:pH = 7.6, PCO2 = 25 mm, HCO3- = 20 mEq/L Is the patient in acidosis or alkalosis? alkalosis Is the cause respiratory or metabolic? respiratory Is the condition is being compensated? compensated by renal system