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BYU Cell 220 Exam 2 Questions and Correct Answers/ Latest Update / Already Graded

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What are the three types of muscle tissue? Ans: Skeletal, Cardiac, and Smooth What are the properties of muscle tissue? Ans: Excitability, Contractility, Elasticity, and Extensability Where is cardiac muscle found? Ans: The Myocardium of the Heart What are the Characteristics of Cardiac Muscle? Ans: Branches Fibers, 1 or 2 nuclei, Intercalated discs, Striations, auto-rhythmic, Involuntary Where is smooth muscle found? Ans: Walls of visceral organs What are the characteristics of smooth muscle? All rights reserved © 2025/ 2026 | Page | 2 All rights reserved © 2025/ 2026 | Ans: Fusiform shape, 1 nucleus, no striations, involuntary, fatigue-resistant What are the characteristics of skeletal muscle? Ans: Large, Cylindrical, many nuclei, striated, voluntary, vascular, innervated at neuromuscular junctions, formed from fusion of myoblasts What are the functions of skeletal muscle? Ans: Movement, posture maintenance, temperature regulation, storage of materials (amino acids and glycogen), movement of materials, support abdominal organs, joint stabilization The endomysium wraps... Ans: Muscle fibers The perimysium wraps... Ans: Fascicles The epimysium wraps... Page | 3 Ans: Entire muscles Deep fascia wraps... Ans: Muscle groups What is the order of skeletal muscle organization from smallest to largest? Ans: Myosin/Actin proteins, thick/thin filaments, myofibril, myofiber, fascicle, muscle, muscle group Collagen fibers of endomysium, perimysium, and epimysium are __________ with tendons Ans: Continuous What wraps a muscle fiber? Ans: The Sarcolemma Tendons connect muscles to...

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BYU Cell 220 Exam 2 Questions and
Correct Answers/ Latest Update / Already
Graded
What are the three types of muscle tissue?

Ans: Skeletal, Cardiac, and Smooth


What are the properties of muscle tissue?

Ans: Excitability, Contractility, Elasticity, and Extensability


Where is cardiac muscle found?

Ans: The Myocardium of the Heart


What are the Characteristics of Cardiac Muscle?

Ans: Branches Fibers, 1 or 2 nuclei, Intercalated discs,
Striations, auto-rhythmic, Involuntary


Where is smooth muscle found?

Ans: Walls of visceral organs


What are the characteristics of smooth muscle?
All rights reserved © 2025/ 2026 |

, Page |2


Ans: Fusiform shape, 1 nucleus, no striations, involuntary,
fatigue-resistant


What are the characteristics of skeletal muscle?

Ans: Large, Cylindrical, many nuclei, striated, voluntary,
vascular, innervated at neuromuscular junctions, formed from
fusion of myoblasts


What are the functions of skeletal muscle?

Ans: Movement, posture maintenance, temperature
regulation, storage of materials (amino acids and glycogen),
movement of materials, support abdominal organs, joint
stabilization


The endomysium wraps...

Ans: Muscle fibers


The perimysium wraps...

Ans: Fascicles


The epimysium wraps...

All rights reserved © 2025/ 2026 |

, Page |3


Ans: Entire muscles


Deep fascia wraps...

Ans: Muscle groups


What is the order of skeletal muscle organization from smallest to
largest?

Ans: Myosin/Actin proteins, thick/thin filaments, myofibril,
myofiber, fascicle, muscle, muscle group


Collagen fibers of endomysium, perimysium, and epimysium are
__________ with tendons

Ans: Continuous


What wraps a muscle fiber?

Ans: The Sarcolemma


Tendons connect muscles to...

Ans: Bones or skin



All rights reserved © 2025/ 2026 |

, Page |4

An aponeurosis is a...

Ans: Flat tendon


Testosterone makes muscle fibers...

Ans: Wider and thicker


Where is skeletal muscle found?

Ans: Connected to the skeleton


What does actin do?

Ans: Contracts muscle (acts)


What does myosin do?

Ans: Binds to ATP


How do z lines move?

Ans: Closer together. In toward M line.


What do troponin and tropomyosin do to aid muscle movement?

All rights reserved © 2025/ 2026 |

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