Coordination and response

Question 1

sensory neutron

Answer 1

carry signals from receptors to the spinal cord

Question 2

relay neutron

Answer 2

from one part of the central nevrous system to another

Question 3

motor netrone

Answer 3

carry signals from the centeral neverous system to effectors

Question 4

process of refelx arc

Answer 4

1. stimulus
2. receptor neurone
3. sensory neurone
4. relay neurone
5. motor neurone
6. effector
7. response

Question 5

structure of a nerve cell

three parts needed

Answer 5

dendrons and dentrites
+
a cell body with a nucleus
+
axon

Question 6

synapse

Answer 6

the gap between neturons in which nerotransmitters are transmitted aross by diffusion from the axon to the denderite

Question 7

Axon

Answer 7

holds nerotransmitters and vesticles in the axon release them into the synapse

Question 8

dendrite

Answer 8

has receptor molecules which nerotransmitters bind onto which triggers a nevre impulse in this neutron

Question 9

How does a synapse work

use: axon terminal, vesticles, synaptic gap, repetor proteins, dendrite

Answer 9

At the end of a neurone’s axon, is an Axon terminal . As an electrical impulse arrives, vesicles containing are stimulated and they release these chemicals into the synaptic gap between neurones.
These then diffuse across the gap, binding with repetor proteins on the surface of dendrite the of the next neurone. If enough binding occurs an impulse is triggered along this neurone.

Question 10

which two organs make up the centeral nevrous system

Answer 10

brain and spinal cord