I

Question 1

Ileum

Answer 1

The part of the small intestine between the duodenum and the colon, the major function of which is the absorption of digested food.

Question 2

Immune system

Answer 2

Tissues, cells and chemicals that act together to give a defence against pathogens.

Question 3

Immunity

Answer 3

Protection against disease provided by the immune system, including lymphocytes and antibodies.

Question 4

Implantation

Answer 4

The embedding of an embryo into the lining of the uterus.

Question 5

Ingestion

Answer 5

The process of taking in food.

Question 6

Inheritance

Answer 6

The transmission of genetic information from generation to generation.

Question 7

Inherited disorders

Answer 7

Disorders caused by dominant or recessive alleles that are passed from one generation to the next.

Question 8

Insulin

Answer 8

A hormone produced by the pancreas that stimulates the liver and muscles to store glucose as glycogen so causing a reduction in the concentration of glucose in the blood.

Question 9

Intercostal muscles

Answer 9

Muscles between the ribs; external intercostal muscles contract during inspiration; internal intercostal muscles contract during expiration.

Question 10

In vitro fertilisation (IVF)

Answer 10

Fertilisation occurs outside of the body by mixing sperm and eggs in a laboratory dish. The resulting embryo is placed in uterus.

Question 11

Involuntary actions

Answer 11

an action that we do not have to think about.

Question 12

Iris

Answer 12

The coloured part of the eye around the pupil. It alters the size of the pupil and so controls the amount of light entering the eye.