BYU Cell 220 Exam 2 Newest / BYU Cell 220 Exam 2
Preparation/BYU Cell 220 Exam 2 Practice Exam With
Complete Questions And Correct Answers| Newest
Version!!!
What are the three types of muscle tissue? - Answer-
Skeletal, Cardiac, and Smooth
What are the properties of muscle tissue? - Answer-
Excitability, Contractility, Elasticity, and Extensability
Where is cardiac muscle found? - Answer-The
Myocardium of the Heart
What are the Characteristics of Cardiac Muscle? -
Answer-Branches Fibers, 1 or 2 nuclei, Intercalated discs,
Striations, auto-rhythmic, Involuntary
Where is smooth muscle found? - Answer-Walls of
visceral organs
What are the characteristics of smooth muscle? - Answer-
Fusiform shape, 1 nucleus, no striations, involuntary,
fatigue-resistant
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What are the characteristics of skeletal muscle? - Answer-
Large, Cylindrical, many nuclei, striated, voluntary,
vascular, innervated at neuromuscular junctions, formed
from fusion of myoblasts
What are the functions of skeletal muscle? - Answer-
Movement, posture maintenance, temperature regulation,
storage of materials (amino acids and glycogen),
movement of materials, support abdominal organs, joint
stabilization
The endomysium wraps... - Answer-Muscle fibers
The perimysium wraps... - Answer-Fascicles
The epimysium wraps... - Answer-Entire muscles
Deep fascia wraps... - Answer-Muscle groups
What is the order of skeletal muscle organization from
smallest to largest? - Answer-Myosin/Actin proteins,
thick/thin filaments, myofibril, myofiber, fascicle, muscle,
muscle group
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Collagen fibers of endomysium, perimysium, and
epimysium are __________ with tendons - Answer-
Continuous
What wraps a muscle fiber? - Answer-The Sarcolemma
Tendons connect muscles to... - Answer-Bones or skin
An aponeurosis is a... - Answer-Flat tendon
Testosterone makes muscle fibers... - Answer-Wider and
thicker
Where is skeletal muscle found? - Answer-Connected to
the skeleton
What does actin do? - Answer-Contracts muscle (acts)
What does myosin do? - Answer-Binds to ATP
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How do z lines move? - Answer-Closer together. In toward
M line.
What do troponin and tropomyosin do to aid muscle
movement? - Answer-Make a complex allowing actin to
slide
Actin is a _____ filament - Answer-Thin
Myosin is the _________ filament - Answer-Thick
M lines are - Answer-Anchors, immobile
Action potential occurs at the... - Answer-Neuromuscular
junction
The Terminal Cisternae... - Answer-Hold nutrients (mostly
calcium)
What is the process of muscle contraction? - Answer-1. An
action potential arrives at the neuromuscular junction. 2.
ACh is released, binds to receptors, and opens sodium ion
channels. 3. Action potential travels along the t-tubules. 4.
Calcium reacts with the troponin/tropomyosin complex,