Nervous system Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Define ‘homeostasis’.

A

Maintainence of a constant internal environment relatively stable at optimum conditions through negative feedback

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

Name three key internal conditions that need to be controlled through homeostasis.

A

Temperature; Water levels; Blood glucose level

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

Name the cell type that detects stimuli in the internal or external environment.

A

Receptor

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

Name the component in the nervous system that processes the stimuli information.

A

Coordination centre

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

Name the component in the nervous system that bring about responses to stimuli.

A

Effectors

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

State the function of a neurone.

A

Transmit electrical impulses

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

Name the type of neurone that carries impulses to the central nervous system.

A

Sensory neurone

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

Name the type of neurone that carries impulses away from the central nervous system.

A

Motor neurone

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

Name two types of effectors.

A

Muscle; Glands

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

Name the two coordination centres that make up the central nervous system.

A

Brain + Spinal cord

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

Where is the cell body found in the sensory neurone?

A

Along/On the neurone fibre

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

Where is the cell body found in the motor neurone?

A

At the beginning of the motor neurone

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

Name one factor that may affect human reaction time.

A

Energy or sugary drinks/Practise beforehand/drugs etc.

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

What are reflex actions?

A

Automatic and rapid actions that do not involve the conscious parts of the brain to protect us

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

Name the three types of neurones that are involved in coordinating reflexes.

A

Sensory, relay, motor neurones

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

Where is the relay neurone found in a reflex arc?

A

Spinal cord

17
Q

Illustrate the reflex pathway in a flowchart, showing all the components involved.

A

(Stimulus –>) Receptor –> Sensory neurone –> Relay neurone –> Motor neurone –> Effector (–> Response)

18
Q

What are synapses?

A

The junction/physical gap between neurones

19
Q

How is information passed through the synapse?

A

Neurotransmitters/Chemicals are released, which diffuse across the synapse to the receptor sites on the next neurone