14.4 and 14.5 Quiz: Muscle Contractions and Physical Exercis

This is an increase in the tension or decrease in the length of a muscle

• muscle contraction

• muscle tension

• muscle tissue

• muscle metamorphosis

If you are holding a weight in the same position with no movement, you are conducting this type of muscle contraction.

• hypertonic

• isometric

• isotonic

• hypotonic

If you are doing push-ups, what type of muscle contraction would be occuring?

• isometric

• isotonic

• hypertonic

• hypotonic

Which letter(s) identifies an isometric muscle contraction

• A

• B

• C

Which letter(s) identifies an isotonic muscle contraction

• A

• B

• C

Which part of the nervous system is responsible for skeletal muscle movement?

• somatic

• parasympathetic

• autonomic

• sympathetic

This cellular structure of the nervous system is able to excite multiple muscle fibers at one time

• dendrite

• axon

• motor neuron

• synapse

The connection between a motor neuron axon terminal and a muscle fiber occurs at this site

• neuromuscular junction

• neuromuscular trench

• cell body

• nucleus

This occurs when a motor neuron transmits a signal to a muscle fiber to initiate a muscle contraction

• synapse

• neurotransmitter

• nerve impulse

• exciter

What structure, of the nervous system, is shown in the image?

• motor neuron

• nucleotide

• nucleolus

• muscle neuron