Human nutrition D2

Question 1

who is William Beaumont?

Answer 1

scientist in 1820 that revealed the chemical nature of digestion.
- non fatal gunshot that left the persons stomach open for beaumont ot observe the process of digestion.

Question 2

function of salivary gland

Answer 2

saliva moistens and lubricates food.
Amylase digest polysaccharides

Question 3

function of pharynx

Answer 3

swallows food

Question 4

function of esophagus

Answer 4

transports food in stomach

Question 5

function of stomach

Answer 5

stores and churns food pepsin digest protein. HCI activates enzymes, break up food. mucus protects stomach wall. limited absorption.

Question 6

function of the liver (5)

Answer 6

-breaks down and builds up many biological molecules.
-Stores vitamins and iron.
-destroys old blood cells
-destroys poisons.
-Bile aids in digestion.

Question 7

function of pancreas (4)

Answer 7

• hormones regulate blood glucose levels.
• trypsin digests proteins
• amylase digest polysaccharides
• lipase digest lipids

Question 8

function of gall bladder

Answer 8

stores and concentrates bill

Question 9

function of small intestine

Answer 9

• completes digestion
• mucus protects gut wall
• absorbs nutrients/water

Question 10

function of large intestine

Answer 10

• reabsorbs some water and ions
• forms and stores feces

Question 11

what controls the secretion of digestive juices?

Answer 11

nervous and hormonal mechanisms.

Question 12

what controls the secretion of digestive juices?

Answer 12

nervous and hormonal mechanisms.

Question 13

what is “fight or flight” ?

Answer 13

survival response on the decision to fight or run away.

Question 14

definition of exocrine gland

Answer 14

gland that makes substances such as sweat, tears, saliva, milk, and digestive juices, and releases them through a duct or opening to a body surface.

Question 15

structure of exocrine gland