EXSS 276 Muscle Exam Questions And
Answers 2025 Update.
____ muscle is that primarily attached to bones. It is (striated/non-striated) and
(voluntary/involuntary. - Answer✔Skeletal; striated; voluntary
____ muscle forms the wall of the heart; it is (striated/non-striated) and (voluntary/involuntary)
- Answer✔Cardiac; striated; involuntary
____ (____) muscle is located in the viscera; it is (striated/non-striated) and
(voluntary/involuntary). - Answer✔Smooth (visceral); non-striated; involuntary
In regards to nucleation, skeletal muscle is ____, and cardiac and smooth muscle are ____. -
Answer✔multinucleated; mononucleated
Skeletal muscles are (independent/interconnected), while cardiac muscle ____. -
Answer✔independent; interconnects
Cardiac muscle and smooth muscle are regulated by neurons of the ____ division of the
peripheral nervous system and by ____ released by endocrine glands. - Answer✔autonomic;
hormones
Through sustained contraction or alternating contraction and relaxation, muscular tissue has 5
key functions. What are they? - Answer✔Produce body movements; stabilize body positions;
regulate organ volumes; movement of substances within the body; produce heat
What is the process called in which muscular tissue contracts to produce heat, which is used to
maintain normal body temperature? - Answer✔Thermogenesis
What are the five properties of muscle tissue? - Answer✔Excitability, extensibility, contractility,
elasticity, thermal
Ability of muscle tissue to respond to stimuli and produce electrical signals; what are these
electrical signals called? - Answer✔excitability; action potentials
Ability of muscle tissue to shorten and generate force once stimulated by an action potential -
Answer✔Contractility
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If the tension generated (force) is great enough to overcome the ____ (resistance) of the object
being moved, the muscle ____ and movement occurs. - Answer✔load; shortens
Ability of muscle tissue to stretch without damaging the tissue (this property allows muscle to
contract even when it is already stretched) - Answer✔Extensibility
Ability of muscle tissue to return to its original length and shape after contraction or extension -
Answer✔Elasticity
Ability of muscle tissue to produce heat energy - Answer✔Thermal
Striations of skeletal muscle are due to the A band and the I band. What proteins make up each
of these bands? Which one is darker? - Answer✔A band is composed of actin and myosin
together; I band is actin only; A band is darker
Each skeletal muscle is a separate ____ composed of many cells called ____. - Answer✔organ;
fibers
Connective tissue of skeletal muscle that surrounds the whole muscle - Answer✔Epimysium
Connective tissue of the skeletal muscle that surrounds fascicles of 10-100 muscle cells -
Answer✔Perimysium
Connective tissue of skeletal muscle that separates individual muscle cells -
Answer✔Endomysium
All of the connective tissue layers of skeletal muscle extend beyond the muscle belly to for the
____. - Answer✔tendon
Tendons are representative of (series/parallel) elastic components. - Answer✔series
Connective tissues are representative of (series/parallel) elastic components. - Answer✔parallel
Muscle composition: (large to small)
Skeletal muscle bundle -->
____-->
Muscle fibers -->
____ -->
Sarcomeres -->
____ - Answer✔Fascicles; Myofibrils; Filaments
Bundle or cluster of nerve or muscle fibers/cells - Answer✔Fascicle
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