FREE BIOLOGY AND STUDY GAMES ABOUT BIO 202: EXAM

PDF Download

FREE BIOLOGY AND STUDY GAMES ABOUT BIO 202: EXAM

4 Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -52 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: What regulates digestive motility?

Answer:

enteric nervous system

Question 2: What is the function of chief cells and where are they located?

Answer:

secrete gastric lipase and pepsinogen; located in lower half of gastric glands

Question 3: What are the functions of the kidney?

Answer:

filter blood plasma, separate waste from useful chemicals, returns useful substances to blood, eliminates wastes, regulates blood volume/pressure by eliminating/conserving water, regulate osmolarity of body fluids, secretes renin Question 4: Is the thick or thin segment of the nephron loop impermeable to water?

Answer:

thin segment

Question 5: What should normal urine from a healthy person not contain?

Answer:

blood, WBCs, sugar (glucose)-diabetes

Question 6: How do the kidneys respond to acidosis?

Answer:

The kidneys will secrete H2PO4. The kidneys compensate for pH imbalances of respiratory origin.Question 7: Why does glomerular filtration occur in respect to glomerular oncotic pressure and glomerular blood pressure?

Answer:

when glomerular oncotic and blood pressures are high, glomerular filtration will occur

Question 8: Where is most of the body water located?

Answer:

blood cells Question 9: What are the components of bile and which one has digestive properties?

Answer:

Bilirubin (pigment), Urobilinogen (brown color of feces), bile acids (steroids synthesized from cholesterol), and Lecithin (a phospholipid-aids in digestion) Question 10: How are fats digested? (Which enzymes are used and where are they located?)

Answer:

lipases located in pancreas

Question 11: What cells secrete hydrochloric acid?

Answer:

parietal cells

Question 12: Which nutrients are absorbed without digestion?

Answer:

Vitamins, free amino acids, minerals, cholesterol, and water

Question 13: A renal pyramid voids urine into what structure(s)?

Answer:

collecting tubules Question 14: Which area of the nephron and kidney is primarily responsible for maintaining the salinity gradient of the renal medulla?

Answer:

juxtamedullary nephrons

Question 15: What is the role of aldosterone?

Answer:

"salt retaining hormone;" increases Na+ reabsorption and water and the release of K secretion. This increases blood volume, therefore increases blood pressure.Question 16: Why do women have a tendency to retain water during part of the menstrual cycle?

Answer:

estrogen mimics the action of aldosterone

Question 17: Explain the sodium-glucose transport protein and its role.

Answer:

a family of glucose transporters; transport glucose across the apical membrane against an uphill glucose gradient

Question 18: What situations would reduce the glomerular filtration rate?

Answer:

(this refers to different pressures; high to low) Vasoconstriction of the afferent arteriole

Question 19: What does the large intestine absorb?

Answer:

Water, Na+ and K, bacteria that multiply and live off the substances in the intestine Question 20: If you know the urine output of a patient in the hospital (mL/min) & the concentration of urea in mg/mL; and you are then told the urea concentration of 0.4 mg/mL in the blood, be able to calculate the percentage of cleared urea from glomerular filtrate?

Answer:

• C=UV/P (C=renal clearance, U=waste concentration of urine, V=rate of urine output, P=waste

concentration of plasma)

Question 21: What is the normal Ph range of tissue fluid?

Answer:

7.35-7.45

Question 22: What are the principal cations in the ICF and ECF?

Answer:

ICF-potassium; ECF-sodium Question 23: Where does the transition from an afferent arteriole to an efferent arteriole occur in the nephron?

Answer:

glomerulus

Question 24: What activates the secretion of pepsinogen?

Answer:

HCl (hydrochloric acid)

Question 25: What stimulates the process of defecation?

Answer:

stretching of rectum

Question 26: What is micturition and what governs its onset?

Answer:

elimination of urine from the body and its onset is governed by the filling of the bladder Question 27: In a healthy kidney, what substances are not filtered by the glomerulus?

Answer:

protein, blood cells, large anions, minerals, hormones, and molecules >8nm in diameter Question 28: Where is a person's fluid intake regulated and what type of sensor is involved?

Answer:

via the skin and the kidneys; osmoreceptors in hypothalamus