Untitled spreadsheet - Sheet1 (2)

Question 1

Tetanic Contraction

Answer 1

Sustained muscle contraction caused by fast repeating stimuli

Question 2

Muscle Spindles and Golgi Tendon Organs

Answer 2

Detect muscle stretch and speed; Produce stretch reflex; Activated by muscle tension

Question 3

PNF

Answer 3

Proprioceptive neuromuscular facilitation; Advanced stretching technique for flexibility

Question 4

Isometric Contraction and Autogenic Inhibition

Answer 4

Tension in muscle with no visible movement; Sudden muscle relaxation due to tension

Question 5

Acetylcholine and Action Potential

Answer 5

Acetylcholine release in synaptic cleft; Action potential generation for contraction

Question 6

Wave Summation and Spatial Summation

Answer 6

Smooth sustained contraction from repeated nerve impulses; Strength of contraction changes by altering motor unit size

Question 7

Muscle Contraction Process

Answer 7

1. Impulse sent to cerebellum; 2. Action potential to motor end plates; 3. Acetylcholine release; 4. Muscle fibers contract

Question 8

Type 2B Muscle Fibres

Answer 8

Rapid contraction speeds; High PC stores; Quick fatigue; White color; High force; <40 seconds endurance

Question 9

Hypertrophy

Answer 9

Muscle enlargement and strengthening

Question 10

Golgi Tendons

Answer 10

Detect muscle tension levels; Cause autogenic inhibition in isometric contractions

Question 11

Slow Oxidative

Answer 11

What are the 3 main types of muscle fibres?

Question 12

Strong impulses activate lots/all motor units. Weak impulses activate fewer motor units and muscle fibres.

Answer 12

What is the difference between a strong and weak contraction?

Question 13

Quick to fatigue, high force levels, high PC stores, fast speeds of contraction, pink in colour, both aerobic and anaerobic

Answer 13

What are some characteristics of Type 2a muscle fibres?

Question 14

All muscle fibres contract or none do.

Answer 14

What is the all or none law?

Question 15

Sporting examples: Type 1 - Mo Farah (marathon, triathlon, Tour de France), Type 2a - 400m runner, Type 2b - shot put, javelin

Answer 15

What is a sporting example for each type of muscle fibre?

Question 16

A part of the brain that controls movement.

Answer 16

What is the cerebellum?

Question 17

1.) Passive stretch - 30 seconds activates Golgi tendon organ. 2.) Isometric stretch - 10 seconds monitors stretch and tension in muscle. 3.) Partner repeats 30-second passive stretch, autogenic inhibition occurs, causing muscle to relax and stretch further.

Answer 17

What are the stages of PNF in practice?

Question 18

Muscle spindles provide information to central nerves about muscle stretch. CNS sends impulses to trigger stretch release.

Answer 18

What do muscle spindles do?

Question 19

Slow twitch, slow to fatigue, high myoglobin and fat stores, mainly aerobic, high mitochondria, high oxidative enzymes

Answer 19

What are some characteristics of Type 1 muscle fibre?