22. The movement a muscle makes, i.e. flexion, extension, rotation, pronation et

ID: 3522526 • Letter: 2

Question

22. The movement a muscle makes, i.e. flexion, extension, rotation, pronation etc. depends on what?

a) the amount of motor units recruited by the motor cortex to contract

b) the type of joint or joints the muscle crosses at the insertion end

23. A motor unit is equal to:

a) one motor neuron and all the muscle fibers within a muscle that neuron stimulates

b) one sensory neuron and all the muscle fibers that it has receptors in

c) GM + Ford

24. The amount of force a muscle generates is determined by:

a) how many motor units are recruited in the muscle

b) bringing all the fibers stimulated to tetanus

c) bringing all the fibers stimulated to a muscle twitch

d) a and b are both correct

e) a and c are both correct

25. Cardiac muscle has small amounts of this organelle to store Ca++. This organelle is found in large amounts in skeletal muscle.

a) nuclei

b) mitochondria

c) rough ER

d) smooth ER

e) lysosomes

22.b b) the type of joint or joints the muscle crosses at the insertion end.

23.A) one motor neuron and all the muscle fibers within a muscle that neuron stimulates.

24.d) a and b are both correct.

25.d) smooth ER

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