Question 19 Where does most of absorption occur? liver large intestine small int

Question

Question 19

Where does most of absorption occur?

liver

large intestine

small intestine

stomach

Question 20

What is the primary function of HCl in the stomach?

activates gastric lipase

It is not HCl, but HCL that is found in the stomach

activates pepsinogen

promotes digestion of nucleic acids

Question 21

Chemical digestion of protein begins where?

pancreas

none of the above

small intestine

stomach

mouth

Question 22

Bile is an enzyme which is secreted by the liver.

Question 23

Chymotrypsin is a brush border enzyme.

Question 24

Vitamin A is a fat soluble vitamin

Question 24 options:

Question 25

Which of the following does not occur in the mitochondria?

electron transport chain

Krebs cycle

glycolysis

all of these choices occur in the mitochondria

Question 26

WHat type of reaction occurs when NAD+ is converted to NADH?

oxidation

reduction

double displacement

no reaction

Question 27

The rate of metabolism in the cell is controlled by ....

vitamins

enzymes

steroids

mitochondria

Question 28

The amount of large protein such as albumin that should be in urine would be closest to which of the following values

rate of renal blood flow

total blood volume entering both kidney each minute

average glomerular filtration rate

zero

Question 29

Which of the following is highest in the renal corpuscle under normal circumstances?

blood colloid osmotic pressure

capsular hydrostatic pressure

capsular osmotic pressure

glomerlular hydrostatic pressure

Question 30

Most reabsorption of substances from the glomerular filtrate occurs in the ...

proximal tubule

loop of Henle

distal tubule

Bowman's capsule

Question 31

Which of the following is not an impact of the neural regulation of GFR?

reduces urine output

shunts blood to other tissues

conserves blood volume

all of these answers are an impact of neural regulation of GFR

Question 32

The glomerulus differs from other capillary beds in the body in that it

has a basement membrane

has much lower blood pressure than most capillary beds

empties into an arteriole

has a much lower permeability than other capillary beds

Question 33

In the myogenic mechanism of renal autoregulation

renin causes contraction of macula densa cells to increase GFR.

smooth muscle in afferent arterioles triggers vasoconstriction to decrease GFR.

atrial natriuretic peptide causes relaxation of mesangial cells to increase GFR.

angiotensin II causes dilation of the proximal and distal convoluted tubules.

Question 34

Put these in order from liver

sphincter of Oddi

hepatic duct

cystic duct

common bile duct

Question 35 (3 points)

Put these steps in order for urine formation

glomerular filtration

Tubular secretion

Tubular reabsorption

Explanation / Answer

19. Small intestine. It is the main area of the GI tract for absorption. It has three separate section : the duodenum, jejunum and ileum.

20. It is not HCI, it is HCL that is found in stomach. It triggers the release of enzymes such as pepsin.

21.chemical digestion of protein begins in stomach where HCL and pepsin is present. Pepsin is the active protein digesting enzyme

22.bile is the enzyme which is secreted by the liver is true. It aids the digestion of lipids in small intestine. And it is stored and concentrated in the gall bladder.

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