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8 Cards in this Set
- Front
- Back
Skeletal Muscle
A. action B. appearance C. type of movement |
(a) move bones
(b) striated, alternating light and dark bands (c) Voluntary movement, but most are also controlled subconsciously to some extent |
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Cardiac Muscle
A. location B. type of movement C. cause of contraction |
a) heart
b) Straited c)Involuntary movement d) Heart beats because of a pacemaker that initiates each contraction. called autorythmicity |
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Smooth Muscle
A. location B. Appearance C. type of movement |
a)in walls of hollow internal structures, such as blood vessels, airways, and most organs in the abdominopelvic cavity, skin, and attached to hair follicles
(b)No striations (c)Involuntary movement |
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Four functions of muscles
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-Producing body movement
-Stabilizing body positions -Storing and moving substances in body -Generating heat |
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Four properties of muscular tissue
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-Electrical Excitability
-Contractility -Extensibility -Elasticity |
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Electrical Excitability
A. definition B. two types of stimuli |
a. Ability to respond to certain stimuli by producing electrical signals called action potentials
b. -Autorythmic electrical signals, such as the heart’s pacemaker -Chemical stimuli such as neurotransmitters |
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Fascia
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a sheet of fibrous connective tissue that supports and surrounds muscles
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Superficial fascia
a. location b. function c. composed of |
a. subcutaneous layer or hypodermis
b. separates muscle from skin c. composed of areolar connective tissue and adipose tissue |