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15 Cards in this Set
- Front
- Back
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Name the 3 types of muscles.
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Skeletal
Cardiac Smooth |
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Name disstinguishing characteristics for the 3 types of muscles
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Smooth - non parallel, no striations
Skeletal - more parallel, all striations Cardiac - not parallel, but more so than smooth, partially straited |
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Muscles: Latissimus dorsi
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originates on vertebrae, invovled in moving foreleg
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Muscles: Trapezius
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originates on the occipital bone or skull, draws the scapula medially, makes forelimb move outward
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Muscles: Deltoid
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originates on scapula, aids in flexing the humerus
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Muscles: Triceps
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originates on the humerus, the forelimb extends
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Muscles: External Obliques
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outer wall of abdomen, constricts the abdomen
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Muscles: Tensor Fasciae Latae
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most cranial of thigh muscles, originates on pelvis, thriangular, extends the leg
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Muscles: Gluteus Medius
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originates on hip, moves leg outward
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Muscles: Biceps Femoris
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originates on pelvis
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Name 3 types of skeletons
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Hydrostatic skeleton, Exoskeleton, Endoskeleton
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Hydrostatic skeleton
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muscle surrounding fluid filled cavityies
annelids, round worms, cnidarians |
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How does a earthworm move?
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2 layers of muscles are involved: circular (outer) and longintudal (inner)
the circular muscles contract, narrowing and lengthing the earthworm, then the longintiudal muscles contract shortening and fattening the worm by pulling the tail toward the head, the *satae* anchor the worm during this movement |
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Exoskeleton
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compmosed of chitin (a polysaccharide)
Arthropods must molt for growth |
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Endoskeleton
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composed of cartilage and or bone
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