GCSE PE definitions

Created by: emzlifee
Created on: 30-08-17 13:44

Aerobic

Respiration with oxygen. When exercise is not too fast and is steady, the heart can supply all the oxygen that the working muscles need.

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Agonist

Muscle or group responsible for the movement

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Anaerobic

Respiration without oxygen. When exercise duration is short and at high intensity, the heart and lungs cannot supply blood and oxygen to muscles as fast as the respiring cells need them.

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Antagonist

Acts to produce the opposite action to the agonist. They work in antagonistic pairs

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Articulating bones

Where two or more bones meet to allow movement at a joint

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Cardiac Cycle

The process of the heart going through the stages of systole and diastole in the atria and ventricles

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Cardiac Output

The amount of blood ejected from the heart in one minute. Stroke volume x heart rate

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Excess post exercise oxygen consumption (EPOC)

Refers to the amount of oxygen needed to recover after exercise. EPOC enables lactic acid to be converted to glucose, carbon dioxide and water (using oxygen). It explains why we continue to breath deeply and quickly after exercise

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Haemoglobin

The substance in the red blood cells which transports oxygen and carbon dioxide

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Heart rate

The number of times the heart beats per minute

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Hypertrophy

The enlargement of an organ or tissue from the increase in the size of its cells

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Isometric contraction

Muscle contraction where the length of the muscle does not alter. The contraction is constant, ie pushing against a load

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Isotonic contraction

Muscle contraction that results in limb movement. Concentric contraction - Shortening of the muscle. Eccentric contraction - lengthening of the muscle.

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Other cards in this set

Card 2

Front

Muscle or group responsible for the movement

Back

Agonist

Card 3

Front

Respiration without oxygen. When exercise duration is short and at high intensity, the heart and lungs cannot supply blood and oxygen to muscles as fast as the respiring cells need them.

Back

Card 4

Front

Acts to produce the opposite action to the agonist. They work in antagonistic pairs

Back

Card 5

Front

Where two or more bones meet to allow movement at a joint

Back

View more cards

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GCSE PE definitions