Homeostasis And Response

Question 1

Give two ways in which reflex action is different from an action controlled by hormones?

Answer 1

Reflex actions are much quicker as they are instant and reflex actions involves impulses and hormone involves chemicals

Question 2

Explain why a man with a damaged spinal cord will not be able to feel a pin stuck in his toe?

Answer 2

The pain receptors connect to the effector via the spinal cord. Therefore, when the pain receptors detect the pin it cannot connect to the effector (muscle) as the connection between the two is severed.

Question 3

What is a hormone?

Answer 3

A chemical substance that regulates processes in the body

Question 4

Name an organ that produces a hormone

Answer 4

Pancreas

Question 5

How are hormones transported to their target organs?

Answer 5

Via the Bloodstream

Question 6

Describe how the hormones FSH, Oestrogen and LH are involved in the control of the menstrual cylce

Answer 6

FSH stimulates oestrogen and matures the egg.
LH triggers the release of the egg.
Oestrogen inhibits FSH

Question 7

Which Hormone controls the concentration of glucose in the blood?

Answer 7

Insulin

Question 8

Which organ produces Insulin?

Answer 8

Pancreas