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Bio Topic 7 - Run for your life > 7.3 Peak performance > Flashcards

7.3 Peak performance Flashcards

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Biology 101 flashcards
1
Q

What is aerobic capacity?

A

The ability for the body to take in, transport and use oxygen

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2
Q

what is VO2 max?

A

The maximum volume of oxygen per minute consumed and used by a person

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3
Q

What is cardiac output?

A

Volume of blood pumped by the heart in a minute

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4
Q

What is stroke volume?

A

The volume of blood ejected from the left ventricle

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5
Q

what is the equation for cardiac output?

A

Stroke volume x heart rate

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6
Q

The heart muscle is said to be what

A

Myogenic

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7
Q

what is the journey of impulses in the heart?

A

SAN - atria - AVN - bundle of His - purkinje fibres

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8
Q

what can be used to detect the electrical activity of the heart?

A

An electrocardiogram

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9
Q

on an ECG, what does the P wave show?

A

The depolarisation of the atria leading to atrial contraction

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10
Q

on an ECG, what does the PR interval show?

A

The time taken for impulses to be conducted from the SAN across the atria to the ventricles through the AVN

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11
Q

On an ECG, which is the QRS complex show

A

The wave of depolarisation resulting contraction of the ventricles

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12
Q

on an ECG, what does the T wave show?

A

Repolarisation of the ventricles during the heart relaxation phase

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13
Q

what does bradycardia mean?

A

The heart rate is slow

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14
Q

what does tachycardia mean?

A

The heart rate is fast

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15
Q

what does atrial fibrillation mean?

A

The heartbeat is a regular

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16
Q

What part of the body controls heart rate?

A

The cardiovascular control centre located in the medulla oblongata

17
Q

What are the two nerves that are between the cardiovascular control centre and the heart and what do they do?

A

The sympathetic nerve is the accelerator and the parasympathetic nerve/vagus nerve is a decelerator

18
Q

what is tidal volume?

A

The volume breathed in and out at each breath

19
Q

what is vital capacity?

A

The maximum volume of air that can be inhaled and exhaled

20
Q

what can be used to measure tidal volume and vital capacity?

A

A spirometer

21
Q

what is minute ventilation?

A

The volume of air taken into the lungs in one minute

22
Q

what is the equation for minute ventilation?

A

Tidal volume x number of breaths

Bio Topic 7 - Run for your life (6 decks)

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