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45 Cards in this Set
- Front
- Back
study of muscles |
myology |
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provides attachment points and support for muscles |
skeleton |
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muscle tissue extends and contract to allow |
movement |
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Muscular System |
600 muscles half of body weight determines form maintains posture produces body heat forms internal organs |
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attaches muscle to bone |
tendon |
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flat, ribbon-like tendon made up of fibrous connective tissue that attaches muscle to bone or as fascia to bind muscles together |
aponeurosis |
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sheet of fibrous membrane that encloses muscles and separates them into groups |
fascia |
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strong bands of fibrous tissue connecting bone to bone or bone to cartilage; aid or restrict movement and support organs |
ligament |
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attachment to muscle -less movable of the two points of attachment to bone. attaches to fixed part of skeleton |
origin |
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attachment of muscle -point of attachment by a muscle to a movable bone. moves when a muscle is contracted |
insertion |
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causes a muscle to move by stimulating a group of muscle fibers |
motor nerve |
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called fibers; long and slender |
muscle cells |
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how are muscles classified |
according to function, shape, and structure |
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skeletal |
muscles attached to skeleton |
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striated |
because of striped microscopic appearance |
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fibers become ______ and ________ when muscles contarct |
shorter and thicker |
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supplied by |
central and peripheral nervous system |
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smooth muscle |
visceral: found in some organs of body nonstriated, spindle-shaped fibers |
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involuntary |
controlled by automatic nervous system |
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cardiac muscle |
involuntary but shows fine striations controlled by autonomic nervous system |
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muscle attachments |
attachment of muscle to tendons extends to phalanges. results in movement and bulk reduction |
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voluntary muscles usually attach to _______ but attach to ________ in the larynx and throat |
bone, cartilage |
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muscles may also be attached to |
skin mucous membranes fascia of other muscles |
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movement of muscles can be |
prime movers antagonists synergists |
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prime mover |
muscle that actively produces a movement usually skeletal |
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antagonist |
muscle that works in opposition to prime movers ex: curls |
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synergist |
muscles that contract with prime mover to help execute a movement or steady a part |
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names for muscles: 6 points of identification |
action origin/insertion point location shape or use direction of their fibers the # of their sections |
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azygous |
not paired |
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bi, tri, quadri |
two, three, four |
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externus |
external or outer |
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gracilis |
slender |
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latissimus |
wide |
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longissimus, longus |
long |
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medius |
intermediate |
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orbicularis |
surrounding |
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quadratus |
square |
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rectus |
straight |
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rhomboideus |
diamond shaped |
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scalenus |
unequally three sided |
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serratus |
sawtoothed |
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teres |
round or cylindrical |
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transverse |
crosswise |
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vastus |
great |
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orbicularis oculi |
muscle in face that closes eyelid |