Neurons

Question 1

How do neurones work?

Answer 1

1) Electrical impulse is sent from a nerve receptor and travels along the axon
2) At nerve ending there is a gap called the synapse. It works as the electrical impulse and triggers the release of neurotransmitters.

Question 2

What’s a reflex arc?

Answer 2

Nerve pathway which makes a fast automatic response possible

Question 3

What are the 3 types of neurones?

Answer 3

Sensory
Relay
Motor

Question 4

What are reflex actions?

Answer 4

Rapid automatic responses which don’t involve the brain. Important because it helps you avoid danger and helps with coordinating daily functions

Question 5

What’s a stimulus?

Answer 5

Change in an organisms surroundings

Question 6

What are receptors?

Answer 6

Something which detects changes. Converts stimulus energy into electrical impulses.

Question 7

What’s an effector?

Answer 7

Muscle or gland that brings a response to the stimulus

Question 8

What’s sensitivity?

Answer 8

Being able to detect or sense changes in the environment and to be able to make responses

Question 9

What’s ADH?

Answer 9

Too little water in the blood

Question 10

What’s homeostasis?

Answer 10

Maintaining a constant internal environment. Need to be kept steady so cells can function properly

Question 11

What’s negative feedback?

Answer 11

Type of control which homeostasis involves

Question 12

What is thermoregulation?

Answer 12

Control of body temperature to ensure optimum temperature for enzymes

Question 13

What are electrical impulses passed through?

Answer 13

Electrical impulses are passed through the nervous system and back to the effector