Brainarium

Why are the ends of the A band the darkest region of the sarcomere? - ️️the thick and thin filaments overlap Skeletal muscle moves a bone at a joint, such as flexing the forearm at the elbow. How is the opposite action produced (for example, extension at the elbow)? - ️️an Agonistic muscle produces the opposite movement Satellite cells lie just outside the muscle ____________________ - ️️fiber membrane What do satellite cells do when they become active? - ️️differentiate i...

Adipose tissue vs skeletal muscle - ️️Adipose: - ~ 90% lipids, small fraction of water Skeletal: - ~75% water ~18% protein Cell membrane (plasma membrane) - ️️- double layer (lipid bilayer) with phospholipids and protein molecules inserted in them - Carbohydrates are attached to extracellular side Sphingolipid chemical composition and function - ️️- sphingosine backbone with fatty acid tail, as well as possible cholines, sugars, attached. -Longer than phospholipids - act a...

MEDL 310 PACKAGE DEAL (COMPILED) WITH GRADED A+ SOLUTIONS

At what temperature should wax be monitored at and why is this important? - ️️2- 4C above its melting point. High temperature will damage tissue and affect cutting characteristics of the wax. What is the results of leaving tissue in dehydrating alcohols or clearing agents for extended periods of time? What is the remedy? - ️️Tissue will be hard, shrunken, and difficult to section. Nothing can be done except to obtain a fresh sample if available When is it necessary to wash tissues?...

List the disadvantages of using formalin as a fixative. - ️️1. rate of formalin fixation is slow, complete fixation takes several days. (adequate in 8hrs) 2. may cause dermatitis in some workers 3. unbuffered formalin in solutions can produce precipitates in tissues (esp. blood-rich tx) 4. concentrated formaldehyde can polymerize, forming paraformaldehyde, reducing working strength of solution and any formalin solution prepared from it. What solution would remove the precipitate forme...

how does delayed fixation affect tissues? - ️️result in drying and decomposition of tissues. loss of nuclear detail, disappearance of cells, cell shrinkage, etc. what is a fixative? - ️️substance that alters tissues through the stabilization of proteins so that it is resistant to changes in subsequent treatments of the tissues. what is a preservative? - ️️does not alter the tissue structure, so it will not protect it from changes in subsequent treatments of the tissue functions...

Which of the following is NOT part of the renal tubule? a. collecting duct b. PCT c. Loop of Henle d. DCT - ️️a. collecting duct What is the correct order in which glomerular filtrate travels though the kidney? a. Distal convoluted tubule, loop of Henle, proximal convoluted tubule, collecting duct b. Collecting duct, distal convoluted tubule, loop of Henle, proximal convoluted tubule c. Proximal convoluted tubule, loop of Henle, distal convoluted tubule, collecting duct d. Loop of H...

the laboratory accession number must be put on the - ️️requisition, specimen label, and in the patient's case information as well as on the cassette and slides what are some sources of tissues that are submitted? - ️️autopsy, surgicals, whole organs, partial organs, excised tumors or cysts, curettage, amputation, products of conception (miscarriage), biopsy why are tissues sent to the lab? - ️️for a diagnostic tool and also if required by the law (Public Health Act) excepti...

List the components of the alkaline enzyme solution secreted by the exocrine pancreas and their functions. - ️️1. watery fluid consisting of HCO3 to help neutralize chyme 2. pancreatic amylase to digest carbs 3. Pancreatic lipase to digest lipids 4. nuclease to digest nucleic acid 5. trypsinogen, chymotrypsinogen, and procarbocypeptidase to digest proteins What is the thin capsule surrounding the liver called? - ️️Glisson's capsule Approximately how much blood comes from each o...

Describe the 2 main functions of the spleen and the portion where each is carried out. - ️️1. removal of particulate matter & defective blood cells from circulating blood - Red Pulp 2. Antibody formation against blood-borne antigens by activation of splenic Blymphocytes - White pulp Which of the following is not a function of lymph nodes? a. storage and proliferation of B lymphocytes b. storage and proliferation of T lymphocytes c. hormone production d. non-specific filtration of lym...

A patient brings his hearing aids in to be cleaned and sets them on the counter what type of transmission should the receptionist be concerned about - ️️Indirect Transmission How does an osteoma present - ️️Bony growth in external auditory canal This is a correct answer Most common cause of hearing loss at 4000 Hz - ️️Acoustic Trauma A mother comes in worried her hearing is worse since the birth of her first kid what is likely happening - ️️Otosclerosis A large dip in the...

A patient comes to the office after losing all hearing in the left ear over a period of about six weeks. The hearing in the right ear is within normal limits. The patient has been to an ENT doctor and has been given medical clearance to seek amplification. The only viable option is a CROS fitting. The patient is reluctant to comply. Which of the following option(s) should be included in counseling the patient? Choose ALL that apply. A May help the patient feel more balanced B. A hearing ...

A patient who is worn hearing aids for a long time reports to your office saying that his ears are "stopped up." He recently had a cold. Which of the following will give the MOST information about this patient complaint? A. Real ear measurement. B. Impedance audiometry C. Pure tone air conduction audiometry D. Pure tone bone conduction audiometry - ️️B. Impedance audiometry When troubleshooting a hearing instrument, the battery current drain was measured. A reading of 0.00 MA w...

NFHS PACKAGE DEAL (COMPILED) WITH GRADED A+ SOLUTIONS

A fair ball is a batted ball which: A Touches first, second or third base. B. While on or over fair territory, touches the person of an umpire or players, their clothing or equipment. C. Settles on the third-base foul line between home and third. D. All of the above - ️️D. All of the above An offender shall be ejected on the first offense when: A. A player loosens up to bat in the opposing team's on-deck circle. B. A player leaves his bench area for the the purpose of physical...

while dieting what foods should you should you avoid? (3) - ️️-Fast food such as Wendy's and McDonald's -French fries, fried chicken, and other fried foods -toppings such as mayo, sour cream, and ranch What percentage of your body weight should you not lose more than during an workout? - ️️2% A light meal should be consumed how long before a workout? - ️️1-2 hours Granola, Crackers and cheese, Bagels with peanut butter are good examples of? - ️️great recovery foods ...

Obstruction - ️️Obstruction is: 1) the act of a defensive team member which hinders a runner or changes the pattern of play 2) when a catcher or fielder hinders a batter unless the fielder is in possession of the ball or making an initial play on a batted ball. **The act may be intentional or unintentional, physical or verbal Fair ball touches a runner; a) Before it touches a fielder b) After it passes any fielder other than the P and another fielder has a play - ️️a) Hit Runner...

In the case of life-threatening injuries: administer first aid to the injured athlete, personally, or have someone call for emergency medical personnel, notify parents /guardians promptly when emergency care is needed.All the above should be included in your emergency action plan. True False - ️️True Public facilities and programs must accommodate an individual with a defined disability in all situations in interscholastic athletics. True False - ️️False The head coach is compl...

In a pinning situation, portions of both scapulae of the defensive wrestler may be: - ️️Inbounds for a fall to occur. Out of bounds for a fall to occur. Held in continuous contact with the mat for a full two seconds for a fall to occur. Wrestling ear guards may contain manufacturer's logo/trademark/reference that can be no more than: - ️️2 1/4 square inches. A takedown shall be awarded when: - ️️The defensive wrestler's legs or torso are controlled, and the majority of th...

What can account for the differences in diets in developing countries V.S. developed countries - ️️Cultivating plants is easier and takes fewer resources than raising livestock Why do many people in world go hungry? - ️️There is plenty of food produced for everyone to have more than enough, but it is not distributed equally Areas that humans depend on for food - ️️Rural Major nutrients humans need in their diet to be healthy - ️️Proteins, carbohydrates, lipids, and vitamin...