Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Coordination and response: The nervous system > Flashcards

Coordination and response: The nervous system Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

label a diagram of the

A

eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what do sensory neurones do

A

carry information from the sense organs too the CNS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what do motor neurones do

A

carry instructions from the CNS to the effector organs (muscles/glands)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what do neurones carry

A

electrical impulses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the junctions between neurones called

A

synapses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what does a nerve contain

A

neurone such as sensory nerves, motor nerves and mixed nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

do reflex actions involve conscious though

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what do reflex actions involve

A

stimulus –> receptor –> sensory neurone –> relay neurone in CNS –> motor neurone –> effector –> response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what do sense organs detect

A

changes inside and outside your body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what does the pupil reflex control

A

the amount of light coming into your eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what does your CNS contain

A

spinal cord and the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what does the central nervous system give you

A

rapid responses to changes in your environment (stimuli)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what type of nervous system runs all over your body

A

peripheral nervous system (made up of spinal nerves and cranial nerves)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is an individual nerve cell called

A

neurone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what happens at a synapse (the tiny gaps in between neurones)

A

the electrical nerve impulse that is being carried cannot cross the synapse so chemical transmitters are released, they diffuse across the gap and when they reach the next neurone, they bind to receptors on the membrane and a new impulse starts up

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

label a motor and sensory neurone

A

printed out

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

how does your brain understand a reflex action that has just taken place

A

impulses travel to your conscious brain which make you aware of what has happened in the reflex reaction, such as taking your hand quickly away from a hot object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is an example of a spinal reflex

A

knee-jerk reflex

19
Q

what is an example of a cranial reflex

A

pupil reflex

20
Q

what are the main sense organs

A
  • eye (vision)
  • ear (hearing and balance)
  • tongue (taste)
  • nose (smell)
  • skin (touch, pressure, temperature and pain)
  • muscles (stretch receptors)
21
Q

all receptors are what of energy

A

transducers

22
Q

what is it called when your lens changes shape to focus your eye

A

accommodation

23
Q

what happens to the lens when you look at distant objects to your eye

A

the ciliary muscles relax and the suspensory ligaments pull tight, the lens goes thin as the light needs to be bent to focus on the retina

24
Q

what happens to the lens when you look at close objects to your eye

A

the ciliary muscles contract and the suspensor ligaments go slack, the lens widens and goes more spherical as the light needs to bend much more to be focused on the retina

25
Q

what controls the amount of light that enters your eyes

A

iris and pupil reflex

26
Q

what does the pupil do in dim light

A

enlarges (dilates) to let as much light as possible into the light

27
Q

what does the pupil do in bright light

A

gets smaller (constricts) to protect the retina from damage

28
Q

sequence of events in the eye reflex is as follows

A

stimulus (light intensity) –> retina (receptor) –> sensory neurones in optic nerve –> unconscious part of brain –> motor neurones in nerve to iris –> iris muscles (effector) –> response (change in size of pupil)

29
Q

what happens to the iris in bright light

A

circular muscles contract and iris gets bigger

30
Q

what happens to the iris in dim light

A

radial muscles contract and iris gets smaller

31
Q

what in our brain controls our conscious thought

A

cerebrum

32
Q

what in our brain is involved in coordination and balance

A

cerebellum

33
Q

what in our brain controls basic bodily functions

A

medulla

34
Q

what in our brain are involved in the chemical control of our body

A

hypothalamus and pituitary gland

35
Q

in our eye what contains receptor cells that are sensitive to light

A

retina

36
Q

in our eye what is the tough white outer layer

A

sclera

37
Q

in our eye what muscle changes the size of the pupil

A

iris

38
Q

in our eye is curved and os the transparent area at the front of the eye

A

cornea

39
Q

in our eye what focuses the image on the retina

A

choroid

40
Q

in our eye what sensory neurones carry impulses from the retina to the brain

A

optic nerve

41
Q

in our eye what is the hole that allows light into the eye

A

pupil

42
Q

in our eye what changes the shape of the lens

A

ciliary muscles

43
Q

in our eye what attaches the ciliary muscles to the lens

A

suspensory ligaments

Biology (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions