Postlab quiz 8 Flashcards Preview

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Flashcards in Postlab quiz 8 Deck (148)
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1

Digestion involves this

breaking down food products so they can be absorbed by the body and be utilized to build and repair our own body systems

2

The digestive system consists of this tube

alumentary canal

3

The alumentray canal begins here and ends here

mouth
anus

4

T/F: the contents of the alumentary canal is considered inside the body

F

5

Three salivary glands

parotid gland
sublingual gland
submandibular gland

6

This is the largest organ in the body and is considered a gland

liver

7

Two functions of the pancreas

exocrine
endocrine

8

The exocrine function of the pancreas is associated with this

digestion

9

The endocrine function of the pancrease is associated with this

regulation of blood sugar levels

10

Abdominal glands of the digestive tract

liver
pancreas

11

The role of the oral cavity

use teeth, tongue, and salvary secretions to masticate food, and prepare it for swallowing

12

Pathway of swallowed food

Pharynx
esophagus
stomach
small intestine
large intestin
anus

13

most digestive activity takes place here

small intestine

14

This prepares the food/wastes for defecation

large intestine

15

Enzymes in the digestive tract do this

assist in all the reactions that reduce molecues to the smallest size so they can be absorbed

16

Enzymes are this type of molecule

protein

17

The active sites on an enzyme have this

specificity

18

Formula associated with enzyme slide

A+B (reactant substrates)--->(enzyme)---->C+D (products)

19

T/F: Enzymes have a specific optimal temperature

T, a certain temperature will be the best for enzyme activity (remember slide)

20

These have an effect on enzyme activity

Temperature
pH
substrate concentration

21

Pepsin is formed here and has this optimal pH

stomach
2 (acidic)

22

salivary amylase is formed here and has this optimal pH

oral cavity
7 (neutral)

23

trypsin is formed here and has this optimal pH

small intestine
9 (basic)

24

T/F: Enzymes only work in one pH environment

F

25

Explain reaction rate vs substrate concentration when an enzyme is present

Reaction rate increases slowly until a saturation point which becomes the maximum rate of reaction given a set number of enzymes
Gentle uphill slope that flattens out.

26

Structures in the digestive canal speed digestion by doing this

increasing surface area

27

Structures of the small intestine that increase surface area

Plicae circularis
villi
microvilli

28

In the stomach this increases surface area

gastric rugae

29

The villi of the small intestine are covered in this

brush boarder

30

Enzymes are imbedded here in the small intestine

Microvilli