BIOL 2402: Exam 5

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1

The path urine takes after it is formed until it leaves the body is the urethra, urinary bladder, and finally the ureter.

false

2

The functional and structural unit of the kidneys is the .

nephron

3

Atrial natriuretic peptide inhibits sodium reabsorption.

true

4

Alcohol acts as an antidiuretic because it .

inhibits the releases of ADH

5

the kidneys are stimulated to produce renin .

by a decrease in the blood pressure.

6

The renal corpuscle is made up of .

bowman's capsule and glomerulus

7

What does NOT describe the justaglomerular complex?

its macula densa cells produce aldosterone.

8

The macula densa cells respond to .

changes in solute content of the filtrate.

9

What is NOT reabsorbed by the proximal convoluted tubule?

creatinine

10

The function of angiotensin II is to .

constrict arterioles and increase blood pressure.

11

What is the salt level-measuring part of the nephron?

macula densa

12

If the GFR is too low, needed substances may pass so quickly through the renal the renal tubules that they are not absorbed and instead are lost in the urine.

false

13

Glycolysis

breakdown of glucose to pyruvic acid

14

Gluconeogenesis

formation of glucose from proteins or fats

15

Glycogenesis

storage of glucose in the formation of glycogen

16

Glycongenolysis

breakdown of glycogen to release glucose

17

It would not be healthy to eliminate all fats from your diet because they serve a useful purpose in maintaining the body.

true

18

The molecule that serves as the major source of readily available fuel for neurons and blood cells is .

glucose

19

Cholesterol, though it is NOT an energy molecule, has importance in the body because it .

is a stabilizing component of the plasma membranes and is the parent molecule of steroid hormone.

20

The term basal metabolic rate reflects the .

energy the body needs to perform only its most essential activities.

21

Many factors influence BMR. What is the most critical factor?

the ratio of surface area to volume of the body

22

What nutrient yields the highest amount of energy per gram when metabolized?

fats

23

High levels of HDLs are considered good.

true

24

Aldosterone is secreted in response to low extracellular potassium.

false

25

The two hormones responsible for the regulation of calcium are pituitary hormone and calcitonin.

false

26

The normal pH of blood is 7.35-7.45

true

27

The body's water volume is closely tied to the level of .

sodium ions

28

What is NOT a method for regulating the hydrogen ion concentration in blood?

diet

29

What is NOT a chemical buffer system?

nucleic

30

What hormone is important in stimulating water conservation in the kidneys?

antidiuretic hormone

31

The maintenance of the proper pH of the body fluids my be the result of .

the control of respiratory ventilation

32

One of the major physiological factors that triggers thirst is .

a rise in plasmaosmolality

33

The urethra contains an internal sphincter of smooth muscle.

true