Core 2: CQ1 P2 Flashcards Preview

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Flashcards in Core 2: CQ1 P2 Deck (14)
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1

Gut wall

When it contracts it pushes food along

2

Involuntary muscle

Muscle that forms the wall of your heart, it works non-stop through life
Has its own blood supply

3

Voluntary muscle

Attached to bones
Work when you want them too

4

Functions that muscle tissue serves through contracting and relaxing

Produce movement
Provide stabilisation- posture and internal organs
Generate heat to maintain body temperature

5

Movement is produced when

Muscles exert force on tendons which pull on articulating bones or other structures
Muscles can only pull not push

6

Agonist muscle

Prime mover
Provides the main force that causes the desired movement

7

Antagonist

Muscles that react
Opposes or reverses a particular movement
Works with agonist in pairs

8

Stabilizer

Synergists and fixators
Aids agonists by promoting the same movement or by reducing unnecessary movement or undesired action
Act at a joint to stabilise it, giving muscle fixed base

9

Muscle tension

The force that is produced when a muscle contracts the load is the force extended on a muscle by a weight

10

Isotonic contraction & two parts of it

Causes the muscle to change length as it contracts and causes movement of a body part
Concentric (shortening of muscle)
Eccentric (lengthening of muscle)

11

Concentric contraction

Prime mover -agonist
Muscle shortens during contraction ( sliding filament theory)
Most common

12

Eccentric contraction

Opposite of concentric
Occur when muscle lengthens as it contracts
(Running downhill, kicking a football)

13

Isometric contraction

No change in muscle length during contraction (held in fixed position)
Used for rehab as well as general strengthening without placing stress on joints
(No change in muscle length but increase in muscle tension)

14

Artery wall

When contracts it squirts blood along