nervous system

Question 1

why are reflexes so fast

Answer 1

reflexes are fast because they are automatic and doesnt involve the conscious part of our brain

Question 2

what is the role of the receptor

Answer 2

to detect stimuli

Question 3

what is the role of the relay neurone

Answer 3

to transfer a signal from the sensory neurone to the motor nuerone

Question 4

what is the role of the motor neurone

Answer 4

to transfer a signal from the CNS to an effector

Question 5

when is adrenaline released

Answer 5

during a flight or fight moment

Question 6

what are the two types of effectors

Answer 6

glands
muscles

Question 7

how does a synapse transmit electrical impulse

Answer 7

when an electrical impulse reaches the end of a neurone chemicals are released
the chemicals diffuse across the synapse and stimulate the next neurone to carry electrical impulses

Question 8

What is the CNS composed of

Answer 8

brain and spinal cord

Question 9

what is reflex

Answer 9

automatic reaction to a stimuli

Question 10

what are the stages of the reflex arc

Answer 10

Stimulus –> receptor–> sensory neurone –> relay neurone –> motor neurone–> effector –> response

Question 11

what are the gaps between a nerve cell called

Answer 11

synapse