Path 231 exams reviews - Portage Learning

Path 231 exams reviews Portage Learning Exam 1 True/False: Persistent metaplasia can lead to dysplasia. True False True/False: Barrett esophagus is an example of dysplasia. True Correct Answer False True/False: Cervical intraepithelial neoplasia is a type of dysplasia. True False True/False: Endometrial hyperplasia is a normal physiologic occurrence. True Correct Answer False Match the following: 1. Proportion of people with a disease who are positive for that disease a. Validity 2. How likely the same result will occur if repeated b. Reliability 3. How a tool measures what it is intended to measure c. Sensitivity 4. People without the disease who are negative on a given test d. Specificity Proportion of people with a disease who are positive for that disease How likely the same result will occur if repeated How a tool measures what it is intended to measure People without the disease who are negative on a given test Multiple Choice Which are true of the mitochondria? Select all that apply. It is involved in cellular respiration They are found far from the site of energy consumption They play a role in apoptosis They control free radicals Which of the following are true regarding cell communication? Select all that apply. Paracrine signaling depends on hormones Neurotransmitters act through synapses Enzyme linked receptors act through an on-off switch Autocrine signaling releases a chemical into the extracellular fluid that affects its own activity Multiple Choice Which of the following are false of the cell? Proteins carry out the functions of the cell membrane. Lysosomes are the digestive system of the cell. The rough ER is the site for lipid synthesis. Microfilaments are thin, threadlike cytoplasmic structures. Which is true of the cytoskeleton? Select all that apply. It controls shape and movement Cilia and flagella are microtubule-filled cellular extensions It includes peroxisomes and proteasomes What factors are used by epidemiologic methods? Select all that apply. How disease is spread How to control disease How to prevent disease How to eliminate disease How to treat disease All of the above None of the above Multiple Choice A patient complains of a sore throat and headache. What are these examples of? Signs Symptoms Both A & B Multiple Choice Which of the following is NOT helpful to the clinician to make a diagnosis? Detailed history Physical exam Correct Answer Evidence based practice Laboratory tests Question 13 0 / 2.5 pts Multiple Choice Chemical agents (poison, alcohol) are examples of which of the following? Risk factors Clinical manifestations Pathogenesis Correct Answer Etiologic factors Define primary prevention and give an example: Your Answer: when the risk factors has to be remove to stop the disease from occurring example-eathing healthy / exercising to stay in shape or prevent heart disease.Giving vaccination to pervent disease in children The goal of primary prevention is to remove risk factors to prevent disease from occurring. Examples include taking folic acid while pregnant to prevent neural tube defects, vaccinating children to prevent communicable disease, eating healthy and exercising to prevent heart disease, and wearing seatbelts or helmets. Explain apoptosis and why it is necessary: Your Answer: apoptosis is the programmed of cell process is necessary for cell dividing because it is removing unwanted cells to make way for new cell. Apoptosis is programmed cell death. This process eliminates cells that are worn out, have been produced in excess, have developed improperly, or have genetic damage. Apoptosis is also responsible for several normal physiologic processes, like replacing cell in the intestinal villi and removing aging red blood cells. Explain what necrosis is and give an example and description of one type of necrosis. Your Answer: necrosis is when cell dies in an organ/tissues that is still alive .this process can interferes with the tissue regeneration and how cell can be replace. one type of necrosis is gengrenouse necrosis which can bowel or the lower extremities that may causes changes in tussue and it functions Necrosis refers to cell death in an organ or tissues that is still part of a living person. It often interferes with cell replacement and tissue regeneration. Coagulative necrosis results most often from a sudden cutoff of blood supply to an organ (ischemia), particularly the heart and kidney. Liquefactive necrosis occurs when some of the cells die but their catalytic enzymes are not destroyed. It is commonly seen with brain infarcts or abscesses. Caseous necrosis occurs as part of granulomatous inflammation and is most often associated with tuberculosis. Gangrenous necrosis most often affects the lower extremities or bowel and is secondary to vascular occlusion. The term gangrene is applied when a considerable mass of tissue undergoes necrosis. In dry gangrene the affected tissue becomes dry and shrinks, the skin wrinkles, and its color changes to dark brown or black. The spread of dry gangrene is slow. It results from a cut off in arterial blood supply and is a form of coagulation necrosis. In wet gangrene, the affected area is cold, swollen, and pulseless. The skin is moist, black, and under tension. Blebs form on the surface, liquefaction occurs, and a foul odor is caused by bacterial action. The spread of tissue damage is rapid. Match the type of cell injury to the cause. Some answers may be used more than once. (1 point each) 1. Sunburn a. Physical agents 2. Obesity b. Radiation injury 3. Reactive oxygen species c. Chemical injury 4. Low oxygen to tissues d. Biologic agents 5. Fractures e. Nutritional imbalances 6. OTC drugs f. Free radical injury 7. Hypothermia g. Hypoxic cell injury 8. Radiation treatment 9. Lead toxicity 10. Bacteria Sunburn Obesity Reactive oxygen species Correct Answer f. Free radical injury Low oxygen to tissues Fractures OTC drugs Hypothermia Radiation treatment Lead toxicity Bacteria List the 4 types of tissue found in the body. Pick 2 and give a description and example of each. Your Answer: nervours tissue-can be find throughout the body and it's used for communication. muscle tissue connective tissue epithelial-(covers the outer surface of the body and lines the inner surfaces. Epithelial tissue covers the body’s outer surface, lines the inner surfaces, and forms glandular tissue. Epithelial tissue has three distinct surfaces and the basal surface is attached to an underlying basement membrane. It is avascular, meaning without blood vessels. It receives oxygen and nutrients from the capillaries of the connective tissue on which it rests. Connective or supportive tissue is the most abundant tissue in the body. It connects and binds or supports the various tissues. Its cells produce the extracellular matrix that support and hold tissues together. Connective tissue is divided into two types: connective tissue proper and specialized connective tissue (cartilage, bone, and blood cells). The four types of connective tissue proper are loose (areolar), adipose, reticular, and dense connective tissue. The function of muscle tissue is to move the skeletal structures, pump blood through the heart, and contract the blood vessels and visceral organs. Muscle tissue can accomplish this by contraction. The two types of fibers that contract are called thin and thick filaments. Thin filaments are called actin, and the thick filaments are myosin. The three types of muscles tissue are skeletal, cardiac, and smooth. Nervous tissue is distributed throughout the body for communication. It provides the means for controlling body function and for sensing and moving about the environment. The two types of cells are neuron and glial cells. Neurons function is communication. Glial (meaning glue) cells support the neurons. What term means “cell eating” and engulfs and then kills microorganisms or other particulate matter? Your Answer: cell eating is refered to phagocytosis Phagocytosis What term means “cell drinking,” and engulfs small solid or fluid particles, as seen with proteins and electrolytes? Your Answer: cell drinking is refrered to pinocytosis Pinocytosis Give one function of a membrane potential: Your Answer: membrane potential can causes music contractions Generate nerve impulse, muscle contractions, or cause hormone secretion