Anat/Phys Muscular System #2 Question Preview (ID: 41431)


Anat/Phys Explorations. TEACHERS: click here for quick copy question ID numbers.

Which structure stores and releases calcium inside a muscle cell?
a) mitochondrion
b) sarcoplasmic reticulum
c) sarcolemma
d) myofilaments

The functional contractile unit of a muscle cell is
a) the sarcolemma.
b) the sarcoplasmic reticulum.
c) the sarcomere.
d) the T tubules.

In a sarcomere, the A band contains
a) only thick filaments.
b) only thin filaments.
c) thick and thin filaments.
d) no filaments.

Which of the following is made of actin?
a) thin filaments
b) thick filaments
c) M line
d) thin filaments and the M line

What is produced during anaerobic respiration that causes muscles to burn?
a) pyruvic acid
b) oxaloacetic acid
c) lactic acid
d) acetyl CoA

A muscle that helps the primary muscle in the movement of joint is a(n)
a) antagonist.
b) prime mover.
c) agonist.
d) synergist.

All of the following are used to name muscles EXCEPT
a) location.
b) movement.
c) size.
d) types of muscle fibers.

All are arrangements of muscle fascicles EXCEPT
a) pennate.
b) circular.
c) convergent.
d) trapezoid.

The molecule only found in muscle cells and acts to add a phosphate to ADP to make ATP is
a) myoglobin.
b) creatine phosphate.
c) myosin.
d) actin.

A contraction in which the muscle does not shorten is called
a) isotonic.
b) isometric.
c) isosceles.
d) isostatic.

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