more ch. 7 anatomy
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each of the black spaces below before clicking
on it to display the answer.
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Components of the appendicular skeleton | arm bones, leg bones, girdles
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Functions of the pectoral girdle | forms the shoulder, attach arm bones to the axial skeleton
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Components of girdles | clavicle, scapula
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Collar bone (little key) acts as a brace | clavicle
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Shoulder blade (shovel or blade) | scapula
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What structure is the funny bone? | the ulnae nerve that runs behind medial epicondyle of the humerous
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What is the pelvic girdle composed of? | hip bones, sacrum, coccyx
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Pair of coxal bones | hipbones
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Joint where coxal bones meet anteriorly | pubic symphosis
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Joint where each coxal bone meets sacrum posteriorly | sacrioiliac joints
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What are the functions of the pelvic girdle? | form hips, attach leg bones to axial skeleton
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Coxal bones consist of 3 fused bones | ilium (top), ischium (underneath in back), pubis (anterior)
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“vinegar cup” | acetabelum
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What does the acetabelum hold? | head of femur
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If acetebelum is improperly formed the bone may slip out of place causing | hip dysplasia
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What is the ilium composed of? | iliac crest, anterior superior iliac spine, greater sciatic notch, obturator foramen
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Thickened superior margin of the hip | iliac crest
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Used to find location for hip injections | anterior superior iliac spine
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Site where sciatic nerve passes, must be divided | greater sciatic notch
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Large opening, nearly closed up-few blood vessels and nerves pass through | obturator foramen
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Structure of pelvis | pelvic brim, false pelvis, true pelvis
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Imaginary line drawn from sacral promontory to pubic symphosis | pelvic brim
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Area above pelvic brim, does not constrict during childbirth, front wall muscle | false pelvis
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Area below pelvic brim, surrounded by bone, size of inlet and outlet must be large enough for baby’s head to pass through | true pelvis
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Modifications of female pelvis for childbearing | wider, shallower, pubic arch 80-90 degrees, true pelvis larger inlet-outlet, sacrum wider
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Segmented structure/can only hold weight if arched | arches of foot
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What are the arches of the foot composed of? | bones, ligaments
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Strong bands of connective tissue | ligaments
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Bones and ligaments are arranged into 3 arches | 2 longitudinal, 1 transverse
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Functions of the arches of the foot | distribute body weight, make walking and running more economical, provides strength
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Tendons and ligaments are composed of | fibrous connective tissue
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Usually attach muscle to bone | tendons
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Collagen fibers of tendon blend with | muscle fibers at one end
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Parallel collagen fibers are | shiny
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Bind 2 bones together | ligaments
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Ligaments are associated with | joints
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Ligaments limit range of motion | stability
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