Control and Communication

Question 1

What is the function of the cerebrum?

Answer 1

Controls memory, conscious thought, imagination, personality…

Question 2

Name the three parts of the brain.

Answer 2

Cerebellum, cerebrum and medulla.

Question 3

What is the function of the cerebellum?

Answer 3

Controls balance and co-ordination of movement.

Question 4

What is the function of the medulla?

Answer 4

Controls breathing and heart rate.

Question 5

What are the two parts of the central nervous system?

Answer 5

The brain and spinal chord.

Question 6

Describe the fucntion of nerves.

Answer 6

Nerves carry impulses from the senses to the central nervous system to the muscles/effectors.

Question 7

Describe the path of flow of information through the reflex arc.

Answer 7

Receptors > sensory nuerone > inter nuerone > motor nuerone > effector

Question 8

What is the function of a reflex action?

Answer 8

Rapid response to protect the body.

Question 9

What is a synapse?

Answer 9

A synapse is a narrow gap between nuerons.

Question 10

What is released from the nuerone into the synapse?

Answer 10

Chemicals

Question 11

What is a hormone?

Answer 11

A protein that acts as a chemical messenger.

Question 12

What is the name of the glands which release hormones?

Answer 12

Endocrine glands.

Question 13

What is the name of the orgns that hormones can effect?

Answer 13

Target organs

Question 14

What are only target organs effected by hormones and not all organs?

Answer 14

They have specific receptors for the hormone.

Question 15

What organ monitors the blood glucose concentrations?

Answer 15

The Pancreas

Question 16

What response does an increase in insulin bring about?

Answer 16

It stimulates the liver to convert excess glucose into glycogen for storage.

Question 17

What hormone does the pancreas release more of in response to a decrease in blood glucose concentration?

Answer 17

Glucagon

Question 18

What response does an increase in glucagon bring about?

Answer 18

It stimulates the liver to break down glycogen into glucos which is released into the blood.

Question 19

What condition can arise from an inbalance in blood glucose levels?

Answer 19

Diabetes

Question 20

What are the causes of diabetes?

Answer 20

Type 1 - lack of prodction of insulin.
Type 2 - resistance to insulin, can be associated with obesity/a poor diet.