topic 6 nervous co ordination

Question 1

how does the nervous system communicate?

Answer 1

by nerve impulses

Question 2

how does the hormonal system communicate?

Answer 2

by hormones

Question 3

how does transmission occur in the nervous system?

Answer 3

by neurons

Question 4

how does transmission occur in the hormonal system?

Answer 4

by the blood system

Question 5

what speed is transmission in the nervous system?

Answer 5

rapid

Question 6

what speed is transmission in the hormonal system?

Answer 6

slow

Question 7

where are impulses sent from the nervous system?

Answer 7

to specific parts of the body

Question 8

where are impulses sent from the hormonal system?

Answer 8

to all parts of the body, only target cells respond

Question 9

how far spread is the nervous system response?

Answer 9

localised

Question 10

how far spread is the hormonal system response?

Answer 10

widespread

Question 11

how fast is the response of the nervous system?

Answer 11

rapid

Question 12

how fast is the response of the hormonal system?

Answer 12

slow

Question 13

how long does the response of the nervous system last?

Answer 13

short lived

Question 14

how long does the response of the hormonal system last?

Answer 14

long lasting

Question 15

what type of effect does the nervous system have?

Answer 15

temporary and reversible

Question 16

what type of effect does the hormonal system have?

Answer 16

permanent and irreversible

Question 17

what are neurons?

Answer 17

specialised cells carrying nerve impulses

Question 18

what does the cell body do?

Answer 18

contains the nucleus and organelles

Question 19

what do the dendrites do?

Answer 19

carry nerve impulses towards the cell body

Question 20

what does the axon do?

Answer 20

carries nerve impulses away from the cell body

Question 21

what do the Schwann cells do?

Answer 21

surround the axon- protect and provide electrical insulation

Question 22

what does the myelin sheath do?

Answer 22

forms a covering around the axon

Question 23

what are the Nodes of Ranvier?

Answer 23

connections between Schwann cells with no myelin sheath

Question 24

what is the job of a sensory neuron?

Answer 24

transmits nerve impulses from the receptor to a relay or motor neuron

Question 25

what is the structure of a sensory neuron?

Answer 25

long dendrites

short axons

Question 26

what is the job of a motor neuron?

Answer 26

transmits nerve impulses to an effector

Question 27

what is the structure of a motor neuron?

Answer 27

short dendrites

long axons

Question 28

what is the job of a relay neuron?

Answer 28

transmits nerve impulses between neurons

Question 29

what is the structure of a relay neuron?

Answer 29

short dendrites

short axons