WorksheetsMuscle Test Review (Take 2)
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
The plasma membrane of a skeletal muscle cell is called the:
a)
sarcomere
b)
myofilament
c)
sarcolemma
d)
sarcoplasm
2.
Cross Bridges are created when myosin heads bind to ______.
a)
thick filaments
b)
thin filaments
3.
Striated voluntary muscle tissue is classified as _______ muscle.
a)
skeletal
b)
smooth
c)
cardiac
4.
The ________ is the organelle that wraps and surrounds the myofibril and stores calcium.
a)
sarcolemma
b)
cross bridge
c)
sarcoplasmic reticulum
d)
sarcomere
5.
Skeletal muscle fatigue occurs because of
a)
inadequate numbers of mitochondria
b)
the feedback loop is not working
c)
a total lack of ATP
d)
insufficient intracellular quantities of ATP due to excessive consumption
6.
Creatine phosphate (CP) funcitons within the muscle ccells by _________.
a)
forming a chemical compound with actin
b)
storing energy that will be transferred to ATP
c)
storing energy that will be transferred to ADP
d)
forming a temporary chemical compound with myosin
7.
Calcium:
a)
causes ATP binding to actin
b)
increases the action potential along the sarcolemma
c)
binds to proteins on myosin
d)
triggers the binding of myosin to actin
8.
The mechanical force of contraction is generated by _________.
a)
the folding of actin & myosin
b)
the disappearance of thin filaments
c)
shortening of thin filaments
d)
a sliding of thin filaments past thick filaments
9.
What occurs when muscles are not used?
a)
muscular dystrophy
b)
botox
c)
atrophy
d)
rigor mortis
10.
When a muscle fiber contracts, the I bands diminish in size.
a)
True
b)
False
100 %
