Co-ordination and control (5) ✅

Question 1

what is the speed of response in the nervous system

Answer 1

fast

Question 2

speed of responce in the hormonal system

Answer 2

slow ( even years)

Question 3

how does it send responces

nature of responce in the nervous system

Answer 3

sends electrical impulses along neurons (nerve cells)

Question 4

nature of responce in the hormonal system

Answer 4

releases hormones from glands into the blood

Question 5

Put the nervous system in order:
effector, stimulus, coordinated, responce, detected by receptors

Answer 5

stimulus- detected by receptors - coordinated - effector - responce

Question 6

what are the three types of neurones + what do they do

Answer 6

sensory neurones - carry sensory impulses from receptors to CNS

motor neurones- carry motor impulses to effectors such as muscles

association (connector) neurones - connect sensory and motor neurones to CNS

Question 7

Name 4 adaptions of the motor neurones

Answer 7

branched ends
myelin sheath
long axon
nucleus

Question 8

what is the function of the motor neurone having branched ends

Answer 8

allows connection with lots of other neurones

Question 9

IA, SUI

what is the function of the motor neurone having myelin sheath

Answer 9

• insulated axon
• speeds up impulses

Question 10

what is the function of the motor neurone having long axon

Answer 10

sends impulses over large distances

Question 11

what is the function of the motor neurone having nucleus

Answer 11

controls cells activity

Question 12

label

Answer 12

Question 13

what is a voluntary action

Answer 13

we think abour ur, slower and we use the brain as coordinator

Question 14

what is a reflex action

Answer 14

automatic, no thinking, faster and spinal cord is coordinator, protects body from damage

Question 15

label

Answer 15

Question 16

describe how a synapse works

Answer 16

impulse arrives at synapse
neurotransmitter released
neurotransmitter diffuses across gap
joins with receptors
if enough neurotransmitter reaches other side the impulse continues

Question 17

S-PR-SN TAKES I-IM TRAVEL ACROSS S TO AN AND THEN TO S-ALONG MN-EFFECTOR

describe how the reflex arc will react to e.g. a hot pan

Answer 17

stimulus - hot pan
pain receptors stimulated
sensory neurone takes impulse to spinal cord
impulse travels across synapse and along association neurone and to another synapse
impulse travels along motor neurone
effector contracts

Question 18

why are reflex neuron’s faster than voluntary neuron’s

Answer 18

only 3 neurones involved and only 2 synapses and spinal cord is coordinator

Question 19

advantage of reflex arc

Answer 19

protects the body from danger/helps escape danger

Question 20

in light or dark what is incharge of controlling pupil size and circular and radial muscles

Answer 20

pupillary reflex

Question 21

C,R MUSCLES, PS, L OR D

what does the pupillary reflex control? + what conditions does it control them in

Answer 21

circular and radial muscles and pupil size
light or dark

Question 22

hey Orla pookie

Answer 22

remember ur strong sexy and u can do this revision. (you have to revise so we can live in big fat mansions beside each other)
LIT US IN 20 YEARS

Question 23

what does the eye do to protect the retina from bright light?

Answer 23

Radial muscles relax
Circular muscles contract
Pupil smaller

Question 24

CM, SL, L, N+F

what is accommodation responsible for + in what conditions

Answer 24

Ciliary muscles
Suspensory ligaments
Lens

near + far

Question 25

Ciliary muscles c _, Suspensory ligaments s__, lens _

what does the eye do to see near objects

Answer 25

Ciliary muscles contract
Suspensory ligaments slack
Lens rounder

Question 26

CM-R, SL-T,L-T

what does the eye do to see far objects

Answer 26

Ciliary muscles relax
Suspensory ligaments taut
Lens thinner

Question 27

what does the eye do to see in dim light?

Answer 27

Radial muscles contract
Circular muscles relax
Pupil bigger
LETS LIGHT THROUGH TO MAKE AN IMAGE

Question 28

label:

Answer 28