Liver, gall bladder and pancreas

Question 1

Liver=

Answer 1

• Detoxification of metabolic wast
• Destruction of spent RBC
• Secretion of bile
• Synthesis of plasma proteins
• Processing and storage of nutrients absorbed from gut tube
• storage of fat soluble vitamins

Question 2

Liver lobule=

Answer 2

The liver has two lobes — the right and the left. Each lobe is made up of thousands of hexagonally-shaped lobules.
The lobules are separated by connective tissue with portal tracts.
There are portal triads at the corners of lobules

Question 3

What are portal triads?

Answer 3

Segments of the portal vein, hepatic artery, and bile ducts.

Question 4

What is the space of disse?

Answer 4

is a space between a hepatocyte, and a sinusoid in the liver. It contains the blood plasma.

Question 5

Gall bladder=

Answer 5

• Muscular sac, sores and concentrates bile 5-10x
  -Tall columnar epithelium with brush border
• Has lymph/ blood vessels in submucosa to transport H20 away

Question 6

Bile=

Answer 6

produced by your liver. It helps your body break down fats in the foods you eat.
- has bile salts that emulsify fats
- the bile pigments are broken down into stercobilin
- has cholesterol, triglycerides, phospholipids and electrolytes

Question 7

Pancreas=

Answer 7

Your pancreas is a large gland in the back of your stomach. It releases enzymes to help with digestion and hormones to regulate blood sugar.
- The exocrine component forms 80% of the gland
- It secretes alkaline fluid which is rich in enzymes
- neutralises acid chyme from stomach
- trypsin/ chymotrypsin is secreted in inactive form which prevents auto-digestion
- activated in the duodenum

Question 8

Explain the control of bile and pancreatic secretion=

Answer 8

The presence of acidic chyme in intestine stimulates production of intestinal juice.
- secretion stimulates liver cells to release bile & pancreatic secretion
- CCK stimulates gallbladder contraction & pancreatic secretion