Muscle Sarcomere Anatomy Question Preview (ID: 55573)


Questions About Proteins And Movements Of Sarcomere. TEACHERS: click here for quick copy question ID numbers.

The Light I Band consists of...
a) Myosin filaments only
b) Myosin and actin filaments
c) Actin filaments only
d) none of these

The functional unit of the muscle cell is the:
a) Sarcomere
b) Myofilament
c) Osteon
d) Muscle fiber

The thick filament is composed of:
a) Myosin
b) Actin
c) Myomesin
d) Nebulin

The thin filament is composed of:
a) Myosin
b) Actin
c) Myomesin
d) Nebulin

Fill-in-the-blank! Muscle, Fascicle, _____, Myofibril
a) Sarcomere
b) Myofilament
c) Actin
d) Muscle fiber

Actin filaments our bound to the edges of the sarcomere, also known as the...
a) M-Line
b) H-Zone
c) Correct Z-Disc
d) A-Band

The ________ functions in regulation of Ca2+ levels.
a) Sarcoplasmic Reticulum
b) Mitochondria
c) T Tubules
d) Fascicle

___ and ___ are regulatory proteins bound to actin.
a) Myosin and actin
b) Glycogen and hemoglobin
c) Calcium and Oxygen
d) Troponin and tropomyosin

Which of the following is NOT a function of the muscular system?
a) Heat production
b) Joint stability
c) Communication
d) Movement

Which of the following sections of a sarcomere does not shorten during contraction?
a) Distance between Z lines
b) I band
c) A band
d) H zone

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