Motor Unit And Skeletal Muscle Contraction

Question 1

What’s in the nervous system ?

Answer 1

Sensory division
Central nervous system
Peripheral nervous system
Motor division
Somatic nervous system/ Automatic nervous system
Sympathetic division/ Parasympathetic division

Question 2

What’s in the skeletal muscle structure ?

Answer 2

Bone
Tendon
Muscle
Epimysium
Endomysium
Perimysium
Fasciculus
Muscle fibre
Myofibril

Question 3

What’s in a muscle fibre ?

Answer 3

Sarcolemma
Transverse tubules
Sarcoplasmic reticulum
Myofibril
Sarcoplasm
Opening into T tubule

Question 4

What does agonists mean ?

Answer 4

Prime movers; responsible for the movement occurring.

Question 5

What does antagonists mean ?

Answer 5

Oppose the agonist to prevent overstretching of them.

Question 6

What does synergists mean ?

Answer 6

Assist the agonists and sometimes fine-tune the direction of movement.

Question 7

What are the three types of muscle action ?

Answer 7

Concentric
Static
Eccentric

Question 8

What does concentric mean ?

Answer 8

When the muscle shortens.

Question 9

What does static mean ?

Answer 9

When the muscle length is unchanged.

Question 10

What does eccentric mean ?

Answer 10

When the muscle lengthens.

Question 11

What four things determine fibre type ?

Answer 11

Genetic
Muscle fibres
Endurance training
Aging