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Science
Biology
Chapter 10- Skeletal Muscle Tissue
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Chapter 10- Skeletal Muscle Tissue
Yasmeen Jenkins
25 July 2022
4.7
(114 reviews)
18 test answers
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question
What is the importance of acetylcholinesterase in the neuromuscular junction?
answer
It breaks down acetylcholine immediately after the neurotransmitter signals a contraction.
question
The point at which a nerve ending and skeletal fiber meet is called a(n) ______.
answer
neuromuscular junction
question
Z discs (Z lines) are ______.
answer
the boundaries of two adjacent sarcomeres
question
A flat sheet of connective tissue that extends beyond the muscle fibers to attach the muscle to bone is a(n) ______.
answer
aponeurosis
question
During contraction, which of the following occurs in a sarcomere?
answer
The lengths of the I bands and the H zone decrease.
question
Myofibrils are __________.
answer
specialized contractile organelles found in muscle cells
question
Endomysium, perimysium, and epimysium __________.
answer
are each continuous with tendons, so they can work together to produce force
question
Myofilaments __________.
answer
- are responsible for shortening muscle cells - are specific types of microfilaments - include actin and myosin
question
This type of muscle makes up the walls of hollow organs, such as the stomach and uterus.
answer
Smooth muscle
question
This type of muscle is found in the heart.
answer
Cardiac muscle
question
This type of muscle contains intercalated discs.
answer
Cardiac muscle
question
This type of muscle is found in large vessels leading to and from the heart.
answer
Smooth muscle
question
Both cardiac muscle and this type of muscle are called involuntary.
answer
Smooth muscle
question
This type of muscle attaches to bone, but may also attach to skin, cartilage, fascia or a raphe.
answer
Skeletal muscle
question
Contractions of these muscles are under voluntary control.
answer
Skeletal muscle
question
What does visceral muscle refers to?
answer
cardiac muscle and smooth muscle.
question
The only muscle cells that branch are ________ muscle cells.
answer
cardiac
question
A muscle fascicle is _____
answer
a bundle of cells.
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