3AN HBL 24/6/24

Label the various parts of the human digestive system.

f

g

h

i

e

d

Bile duct

Mouth

Large intestine

Gall Bladder

Liver

Oesophagus

Small intestine

Pancreas

Stomach

In the mouth, ​ (a)   digests ​ (b)   to ​ (c)   .

In the stomach, ​ (d)   digests proteins to ​ (e)  

• salivary amylase
• starch
• maltose
• protease
• polypeptides
• amino acids
• glucose
• sugars

In the small intestine, lipase helps digest fats into ________ and ______.

• fatty acids

• glycerol

• fat globules

• glycogen

The pH of saliva is (a)   . The pH of gastric juice is ​ (b)   .

The pH of pancreatic juice, bile and intestinal juice are ​ (c)   .

• neutral
• acidic
• alkaline

What are the various functions of the liver?

• deamination of excess amino acids

• detoxification

• regulation of blood glucose levels

• breakdown of hormones

Excess amino acids are transported to the liver where they undergo ____________ (amino groups are removed and converted to urea.

When blood glucose concentration increases above normal, the pancreas will secrete (a)  

When blood glucose concentration decreases below normal, the pancreas will secrete ​ (b)  

• insulin
• glucagon

Insulin causes blood glucose levels to decrease back to normal, while glucagon causes blood glucose levels to increase back to normal.

• True

• False

What are some causes and risk factors of type 2 diabetes?

• old age

• sedentary lifestyle

• family history or genes

• food high in cholesterol

How can we prevent type 2 diabetes?