Brainscape's Knowledge GenomeTM

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


See full index

A2 Biologu Topic 6b > 5. Control Of Heart Rate > Flashcards

5. Control Of Heart Rate Flashcards

1
Q

What is the nervous system split into ?

A

Central nervous system and peripheral nervous system.

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

What is CNS made up of ?

A

Brain and spinal cord.

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

What is peripheral nervous system made up of ?

A

Neurones that connect CNS to rest of body.

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

What is the peripheral system split into ?

A

Somatic

Autonomic

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

What does somatic nervous system control ?

A

Conscious activities

Running

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

What does autonomic nervous system control ?

A

Unconscious activities
Digestion
Control of heart rate

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

What is the autonomic system split into ?

A

Sympathetic
Parasympathetic
Both have opposite effects on body.

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

What is the sympathetic nervous system?

A

Fight or flight System getting body ready for action.

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

What is the parasympathetic system ?

A

Rest or digest system.

Calms body.

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

Summarise nervous system

A

CNS

Peripheral - somatic and autonomic - sympathetic and parasympathetic

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

Sympathetic stands for …

A

Stress

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

Parasympathetic stands for …

A

Peace.

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

What is the cardiac muscle an example of ?

A

Myogenic

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

What does myogenic mean ?

A

Contract and relax without signals from nerves.

Patterns of contractions controls regular heart.

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

Where does process initially start for control of heart beat?

A

Sinoatrial node

SAN

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

What is the SAN?

A

Small mass of tissue in wall of right atrium.
Pace maker as sets rhythm of heartbeat sending out regular waves of electrical activity in atrial walls.
Contraction of right / left atria at same time.

17
Q

What does a band of non conducting collagen do ?

A

Prevents waves of electrical activity from being passed directly from atria to ventricles.

18
Q

Instead , where are waves of electrical activity transferred to?

A

From SAN to atrioventricular node AVN

19
Q

What is AVNs function ?

A

Passing waves of electrical activity on to bundle of his.

20
Q

Why is there a slight delay in transferring waves of electrical activity to bundle of his?

A

Make sure atria have emptied before ventricles contract

A2 Biologu Topic 6b (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions