paper 1 section a Flashcards by Raye Wan

Q

planes + axis

A

SST - sagittal, transverse
CFS - frontal, sagittal
TTL - transverse, longitudinal

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

cardiac output =

A

HR x SV
heart rate x stroke vol

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HR rise before exercise is called

A

anticipatory rise

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

cardiac conduction system

A

Impulse from SA node → medulla
↑ HR - sympathetic NS - accelerator nerve
↓ HR - parasympathetic NS - vagus nerve
Delay impulse - enable atria fully contract
Send impulse to bundle of his to purkinji fibres

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

venus return

A

One way valve in vein
Skeletal muscle pump - muscle contract push blood back heart - compress veins
respiratory pump - ↑ breathing
Suction pressure of heart - heart beat faster + harder

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

starlings law

A

greater gas exchange - supply o2 for resynthesis ATP

↑ venous return
↑ diastole filling
Cardiac muscle ↑ elastic
↑ ejection fraction

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Cardiovascular drift - sub max

A

Warm env, 10 mins after
↓ plasma vol in blood (sweat) = viscous
↓ venous return
Starlings law - SV ↓ = ↑ HR
Cool body down + maintain CO

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

bohr shift

A

Shift R
Occurs when ↑ co2 in blood
O2 lose affinity with haemoglobin more easily

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly