B5 (homeostasis and nervous system)

Question 1

What is homeostasis ?

Answer 1

Regulation of internal and external body conditions

Question 2

What does homeostasis control ?

Answer 2

Water levels, body temperature, body glucose levels

Question 3

What are receptors?

Answer 3

Detect stimuli

Question 4

What are effectors?

Answer 4

Muscles or glands which produce a response to the stimuli

Question 5

Coordination centres include….

Answer 5

Brain and spinal cord

Question 6

Coordination centres

Answer 6

Areas that recieve and process the information from receptors and send our signals to coordinate the response of the body. (Inc. brain, pancreas…)

Question 7

Neurons

Answer 7

Special cells that pass an electrical impulse with information in along them.

Question 8

Nerves

Answer 8

Bundles of hundreds/ thousands of neurons

Question 9

What does CNS stand for?

Answer 9

Central nervous system

Question 10

What is the CNS made of?

Answer 10

Brain + spinal cord

Question 11

Sensory neurons

Answer 11

Cells that carry electrical impulses from your sense organs to CNS

Question 12

Motor neurone

Answer 12

Cells that carry information from CNS to rest of body

Question 13

Stimuli

Answer 13

Changes in environment

Question 14

Reflexes

Answer 14

Automatic response

Question 15

Synapses

Answer 15

Physical gaps between the neurons.

Question 16

Reflex arc process?

Answer 16

Stimulus>Receptor>Sensory neurone>Relay neurone>Motor receptor>effector>response

Question 17

Nervous system summed up

Answer 17

stimulus>receptor>coordinator(CNS)> effector