Anatomy & Physiology Year 1 Flashcards Preview

Barton Peveril A Level PE > Anatomy & Physiology Year 1 > Flashcards

Flashcards in Anatomy & Physiology Year 1 Deck (149)
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1

What is the full name for Type 1 Muscle fibres?

Slow Oxidative

2

What is the name for type 2a muscle fibres?

Fast Oxidative Glycolytic

3

What is the name for type 2b muscle fibres?

Fast Glycolytic

4

What type of contraction occurs when there is no change in length?

Isometric

5

What type of contraction where the muscle length shortens to produce force?

Concentric

6

What is the contraction type when the muscle lengthens under tension?

Eccentric

7

What are the three phases of the Cardiac Cycle?

Diastole, Atrial Systole, Ventricular Systole

8

How long does diastole take?

0.4s

9

How long does ventricular systole take?

0.3s

10

How long does atrial systole take?

0.1s

11

What is a motor unit?

A motor neurone and a number of muscle fibres.

12

Where are electrical impulses sent from for muscular contraction?

Central nervous system

13

What is the name of the neurotransmitter that transmits the action potential across the synaptic cleft?

Acetylcholine

14

What happens if the action potential reaches the threshold charge?

All of the muscle fibres in the motor unit will contract or none at all (ALL OR NOTHING LAW).

15

Flexion and extension occur along which plane of movement?

Sagittal

16

Abduction and adduction occur along which plane of movement?

Frontal

17

Horizontal flexion and extension occur along which plane of movement?

Transverse

18

What is heart-rate?

The number of times the ventricles contract in one minute.

19

What is the resting average heart-rate?

70bpm

20

If HR is 60bpm or below, what is this known as?

Bradycardia

21

What is the anticipatory rise of HR?

A slight increase in HR before exercise caused by the release of adrenaline.

22

What happens to HR when oxygen demand is being met?

A steady state is reached or a plateau.

23

What is stroke volume?

The volume of blood ejected from the heart per ventricular contraction.

24

What is an untrained SV volume at rest?

70-90ml per contraction

25

What is a trained SV volume at rest?

90-110ml per contraction

26

At submaximal exercise what is a SV value for an untrained performer?

120-140ml per contraction

27

At submaximal exercise what is a SV value for a trained performer?

160-200ml per contraction

28

What happens to SV at maximal exercise?

A slight drop due to less filling time.

29

What is does Q stand for?

Cardiac output (L/MIN)

30

What is Q at rest?

5L/MIN