Digestive Flashcards Preview

Zach's TCC Anatomy Test 4 > Digestive > Flashcards

Flashcards in Digestive Deck (39):
1

What does the digestive system break food down into and then absorb into the blood stream?

monomers

2

What is the digestive system regulated by?

parasympathetic nervous system

3

Saliva does what?

cleans mouth and dissolves food into bolus

4

Saliva contains enzymes to start the digestion of what macro nutrient?

carbs

5

Salivary glands secrete how much saliva per day?

more than a liter

6

Which salivary gland contain enzymes to break down carbs?

submandibular

7

Which salivary glands contain mostly serous cells? mucous cells?

parotid and submandibular have mostly serous cells
sublingual secrete mostly mucus

8

Which macro nutrient does the stomach digest?

proteins

9

What's the function of the stomach?

to change bolus into chyme

10

What kind of glands are gastric glands in the gastric pits?

exocrine glands

11

What do parietal glands in the stomach secrete?

hydrochloric acid

12

What does hydrochloric acid active?

pepsinogen & intrinsic factor

13

What do chief cells secrete in the stomach?

pepsinogen

14

What is intrinsic factor needed to absorb?

vitamin b12 - which is needed for RBC production

15

What is the pH of gastric juice?

2

16

What substances are absorbed in the stomach lining?

alcohol and asprin

17

How long are the small intestines?

15 feet long (1-7-7)

18

How long does chyme stay in the small intestines?

1-6 hours

19

What's the function of the small intestines?

major site of chemical digestion & where nutrients are absorbed

20

What macro nutrient is digested in the duodenum?

fats

21

What glands are active in the duodenum and what is neutralized here?

pancreas and gallbladder; hydrochloric acid

22

What is the jejunum's function?

chemical digestion and absorption of nutrients

23

What is Ileum rich in?

lymph nodes

24

What is contact digestion?

chyme is broken down by touching the sides which contain villi

25

What do brush boarder enzymes do?

complete the digestion of carbs and proteins

26

How long do substances stay in the large intestine?

12-24 hours

27

What things make up feces? (3)

undigested material, dead epithelial cells, bacteria

28

How long is the large intestine?

5 feet long (cecum to anal canal)

29

What's the function of the large intestine? (2)

absorbs water and electrolytes, forms and expells feces (not much digestion here)

30

What does the liver produce?

bile

31

What does the liver store?

glycogen and fat soluble vitamins

32

What does the liver do to blood?

detoxifies it

33

Where is bile stored?

gallbladder

34

Gastric emptying is under control of which part of the digestive tract?

duodenum

35

What is the endocrine function of the pancreas?

control blood sugar levels (via insulin and glucagon)

36

What is the exocrine function of the pancreas?

produces and secretes digestive enzymes

37

How long does food stay in the stomach?

1-4 hours

38

How often is the lining of the stomach renewed?

every 3 days

39

What is produced when hydrochloric acid is mixed with pepsinogen?

pepsin