Brainscape's Knowledge GenomeTM

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


See full index

2. Year 12 Biology cards > A5 Heart > Flashcards

A5 Heart Flashcards

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

Name the 4 chambers of the heart

A

Left and right atrium
Left and right venricle

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

Describe the direction of blood flow from the right atrium

to the pulmonary artery

A

Right atrium –> atrioventricular valve –> right ventricle –>

semi lunar valve –> pulmonary artery

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

Name the 2 veins that bring blood into the atria

A

Vena Cava

Pulmonary vein

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

Name the blood vessel labelled B and state its function

A

Aorta

Carries blood from the left ventricle to the rest of the body

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

Name the blood vessel labelled A

A

Coronary artery

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

Name the chambers labelled A, B, C ad D

A

A = Right atrium

B = Right ventricle

C = Left atrium

D = Left ventricle

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

Name the 2 arteries that carry blood away from the ventricles

A

Aorta

Pulmonary artery

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

Name the valves found in the heart

A

Atrioventricular valves

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

Name the blood vessel labelled A and state its function

A

Pulmonary artery

Transports blood from right venricle to the lungs for gas exchange

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

What is the function of the atrioventricular valves?

A

Prevent the back flow of blood into the atria when the ventricle walls contract.

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

Explain why the atria walls are thinner than the ventricle walls.

A

Blood does not need to be pushed under high pressure so walls do not need to contain large amounts of muscular tissue

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

Name the blood vessel labelled C

A

Vena cava

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

What is the function of the blood vessels labelled A

A

Deliver oxygen and glucose to the heart muscle cells

Required for aerobic respriation

Releases ATP

ATP provides energy fpr heart muscle contraction

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

Describe what happens during atrial systole

A

Atria contract.
Blood pressure in the atria increases
Atrioventricular valves open
Blood is pushed into the ventricles.

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

Name the structure labelled X and state its function

A

Atrioventricular valve

Prevent blood flow from left ventricle to left atrium

when the ventricle wall contracts

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

Describe what happens during ventricular systole

A

Ventricles contract.
Blood pressure in the ventricles increases
Atrioventricular valves close
Semi lunar valves open
Blood flows into the arteries.

17
Q

The heart tissue is myogenic. What does this mean?

A

The contraction of the heart is initiated from within the muscle rather than by nerve impulses.

18
Q

Explain how the contraction of the heart is controlled.

A

SAN generates a wave of electrical excitement that cross the atria, causing the muscle to contract
AVN receives, delays and then passes an electrical impulse down the bundle of His to the apex of the heart.
Impulse travels into the Purkinje fibres which branch across the ventricles causing them to contract from the apex upwards

19
Q

Why does the AVN delay the impulse along the bundle of His?

A

Allow time for the blood to pass through the

atrioventricular valve and into the ventricles

20
Q

Name the blood vessel labelled X

A

Pulmonary vein

21
Q

Name the blood vessel that delivers blood to the kidney

A

Renal artery

22
Q

Name the blood vessels that transport blood to and from the lungs

A

Pulmonary artery

Pulmonary vein

23
Q

The graph shows the pressure changes in the heart.

Describe what happens at point A

A

Atrioventricular valve closes

Pressure in the ventricle is higher than in the atrium

24
Q

The graph shows the pressure changes in the heart.

Describe what happens at point B

A

Semi lunar valve opens

Pressure in the ventricle is higher than in the aorta

25
Q

The graph shows the pressure changes in the heart.

Describe what happens at point C

A

Semi lunar valve closes

Pressure in the aorta higher than in the ventricle

26
Q

The graph shows the pressure changes in the heart.

Describe what happens at point D

A

Atrioventriclar valve opens

Pressure in the atrium is higher than in the ventricle

2. Year 12 Biology cards (20 decks)

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