Gastro-Intestinal System

Question 1

What are the components of the Alimentary tract? (8)

Answer 1

Mouth
Pharynx
Oesophagus
Stomach
Duodenum
Small Intestine
Large Intestine
Rectum and Anus

Question 2

What are the 4 stages of the digestive process.

Answer 2

Ingestion- Food taken in to through the mouth.

Digestion- Food broken down, Mechanically and chemically.

Absorption- Nutrients pass through the walls of organs into bloodstream.

Elimination- Undigested components are excreted as faeces

Question 3

What is Peristalsis?

Answer 3

A caterpillar like motion moving food along the tract.

Question 4

What are the functions of the liver (6)

Answer 4

Metabolise Carbohydrates, Fats and Proteins.
Detoxification of drugs and toxins
Inactivation of Hormones
Production of heat
Secretion of Bile
Storage of Substances

Question 5

What are the functions of the Pancreas (2)

Answer 5

Production of Pancreatic juice

Production of insulin (to control blood sugar)

Question 6

What is the peritoneum?

Answer 6

The membrane which lines the abdomen and covers abdominal organs.
Prevents friction as organs move against each other, helps to keep them in position.

Question 7

What is the function of the spleen?

Answer 7

Produce white blood cells.
Break down old red blood cells
Store new red blood cells

Question 8

What is the function of the Kidneys? (3)

Answer 8

Filters the blood
Regulates salt and water balance
Excretes Urine