The Muscular System
Quiz
•
Biology
•
12th Grade
•
Hard
Albert Silang
Used 64+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of these is true of skeletal muscle?
spindle-shaped cells
under involuntary control
many peripherally located nuclei per muscle fiber
forms the walls of hollow internal organs
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these is not a major property of muscle?
contractility
elasticity
excitability
extensibility
secretability
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given these structures:
(1) whole muscle
(2) muscle fiber (cell)
(3) myofilament
(4) myofibril
(5) muscle fasciculus
Choose the arrangement that lists the structures in the correct order from largest to smallest.
1,2,5,3,4
1,2,5,4,3
1,5,2,3,4
1,5,2,4,3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Each myofibril
is made up of many muscle fibers
contains sarcoplasmic reticulum
is made up of many sarcomeres
contains T tubules.
is the same thing as a muscle fiber.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Myosin myofilaments are
attached to the Z disk.
found primarily in the I band.
thinner than actin myofilaments.
absent from the H zone.
attached to filaments that form the M line.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these statements about the molecular structure of myofilaments is true?
Tropomyosin has a binding site for Ca2+.
The head of the myosin molecule binds to an active site on G actin.
ATPase is found on troponin.
Troponin binds to the rodlike portion of myosin.
Actin molecules have a hingelike portion, which bends and straightens during contraction.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The part of the sarcolemma that invaginates into the interior of skeletal muscle fibers is the
T tubule system
sarcoplasmic reticulum
myofibrils
mitochondria
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