Clemson Biol 2220 Exam 3
Questions and Answers 100% Pass
What do skeletal and smooth muscle have in common? - ✔✔1. has elongated cells
2. nucleated
What do skeletal and cardiac muscle have in common? - ✔✔1. nucleated
2. Striations
What do smooth and cardiac muscle have in common? - ✔✔1. both involuntary control
2. nucleated
Define excitability - ✔✔The ability to change a membrane potential
Define contractility - ✔✔The ability to shorten, when stimulated
Define extensibility - ✔✔Ability to extend/stretch, even stretching beyond their resting
length, when relaxed.
Define elasticity - ✔✔Ability of a muscle cell to recoil and resume resting length after
stretching.
What are the 4 characteristics of muscle tissues? - ✔✔1. Excitability
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,2. Contractility
3. Extensibility
4. Elasticity
What are the 4 basic muscle functions? - ✔✔1. Produce movement
2. Maintain posture
3. Stabilize joints
4. Generate heat
State the Muscle organization levels from smallest to largest (6) - ✔✔myofilament--
>sarcomere --> myofibril-->Muscle cell-->fascicle-->muscle (organ)
A myofilament contains ____________ and _____________. It is the ___________ level of
a muscle. - ✔✔-Acin and myosin
-smallest
A sarcomere is a segment composed of __________________s. The unit goes from __
disk to __ disk. - ✔✔myofilaments, goes from z disk to z disk.
A myofibril is made up from ___________________s, aligned within. - ✔✔sarcomeres
A muscle (fiber) cell is wrapped in ______________________, which is then enveloped in
__________________. - ✔✔sarcolemma, then endomysium.
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, (sarcolemma holds the fiber together, while the endomysium wraps around it next)
A fascicle holes many ____________ ______________. - ✔✔muscle fibers
A fascicle is surrounded by _________________. - ✔✔perimysium
The whole muscle is covered in _____________________. - ✔✔Epimysium
A muscle organ is made up of many __________________. - ✔✔fascicles
What part of a skeletal muscle do these cover?
1.Epimysium-
2.Perimysium-
3.Endomysium- - ✔✔1.The whole muscle organ
2. covers fascicles
3. covers muscle fibers (cells)
Epimysium is made up of ____________ ____________ connective tissue. - ✔✔dense
irregular
Perimysium is made up of _____________ ______________ connective tissue. - ✔✔dense
irregular
Endomysium is made up of fine ___________________ connective tissue. - ✔✔areolar
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Questions and Answers 100% Pass
What do skeletal and smooth muscle have in common? - ✔✔1. has elongated cells
2. nucleated
What do skeletal and cardiac muscle have in common? - ✔✔1. nucleated
2. Striations
What do smooth and cardiac muscle have in common? - ✔✔1. both involuntary control
2. nucleated
Define excitability - ✔✔The ability to change a membrane potential
Define contractility - ✔✔The ability to shorten, when stimulated
Define extensibility - ✔✔Ability to extend/stretch, even stretching beyond their resting
length, when relaxed.
Define elasticity - ✔✔Ability of a muscle cell to recoil and resume resting length after
stretching.
What are the 4 characteristics of muscle tissues? - ✔✔1. Excitability
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 1
,2. Contractility
3. Extensibility
4. Elasticity
What are the 4 basic muscle functions? - ✔✔1. Produce movement
2. Maintain posture
3. Stabilize joints
4. Generate heat
State the Muscle organization levels from smallest to largest (6) - ✔✔myofilament--
>sarcomere --> myofibril-->Muscle cell-->fascicle-->muscle (organ)
A myofilament contains ____________ and _____________. It is the ___________ level of
a muscle. - ✔✔-Acin and myosin
-smallest
A sarcomere is a segment composed of __________________s. The unit goes from __
disk to __ disk. - ✔✔myofilaments, goes from z disk to z disk.
A myofibril is made up from ___________________s, aligned within. - ✔✔sarcomeres
A muscle (fiber) cell is wrapped in ______________________, which is then enveloped in
__________________. - ✔✔sarcolemma, then endomysium.
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 2
, (sarcolemma holds the fiber together, while the endomysium wraps around it next)
A fascicle holes many ____________ ______________. - ✔✔muscle fibers
A fascicle is surrounded by _________________. - ✔✔perimysium
The whole muscle is covered in _____________________. - ✔✔Epimysium
A muscle organ is made up of many __________________. - ✔✔fascicles
What part of a skeletal muscle do these cover?
1.Epimysium-
2.Perimysium-
3.Endomysium- - ✔✔1.The whole muscle organ
2. covers fascicles
3. covers muscle fibers (cells)
Epimysium is made up of ____________ ____________ connective tissue. - ✔✔dense
irregular
Perimysium is made up of _____________ ______________ connective tissue. - ✔✔dense
irregular
Endomysium is made up of fine ___________________ connective tissue. - ✔✔areolar
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