Digestion and Absorption- Karius (In Class)

Question 0

where does the fluid in the lumen become hypotonic?

Answer 0

in the small intestine

Question 1

Under normal conditions the colon has to reabsorb about how much?

Answer 1

500mL

Question 2

how many carbs does the average american consumer per day?

Answer 2

300g

Question 3

how much protein is added to lumen by secretions?

Answer 3

40g/day

Question 4

lipids account for about how many grams ingested?

Answer 4

75g/day

Question 5

paracellular pathway?

Answer 5

between cells

Question 6

transcellular pathway?

Answer 6

thru cells; thru pores (more in duodenum than distally); distally-transporters

Question 7

secondary active transport helps to transport what?

Answer 7

glucose, amino acids, some H2O-soluble vitamins

Question 8

where does secondary active transport take place?

Answer 8

small intestine, NOT LARGE

Question 9

what co-transporter is present in the ileum thru the large intestine?

Answer 9

sodium and cholride

Question 10

major way of absorbing Cl in the early small intestine?

Answer 10

Bicarb/Cl exchanger

Question 11

majority of K is absorbed via what pathway?

Answer 11

paracellular pathway in small intestine

Question 12

what happens with potassium in the large intestine?

Answer 12

it is mainly passively secreted (K high inside cell)

Question 13

what determines the amount of TRPV on membrane of enterocyte? what does it transport?

Answer 13

vitamin D; calcium

Question 14

what keeps calcium out of trouble?

Answer 14

calbindin

Question 15

how is fructose absorbed?

Answer 15

facilitated diffusion

Question 16

maltose is made up of what monosaccharide(s)?

Answer 16

2 glucose