Chapter 10- Skeletal Muscle Tissue

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