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more ch. 7
more ch. 7 anatomy
| Question | Answer |
|---|---|
| Components of the appendicular skeleton | arm bones, leg bones, girdles |
| Functions of the pectoral girdle | forms the shoulder, attach arm bones to the axial skeleton |
| Components of girdles | clavicle, scapula |
| Collar bone (little key) acts as a brace | clavicle |
| Shoulder blade (shovel or blade) | scapula |
| What structure is the funny bone? | the ulnae nerve that runs behind medial epicondyle of the humerous |
| What is the pelvic girdle composed of? | hip bones, sacrum, coccyx |
| Pair of coxal bones | hipbones |
| Joint where coxal bones meet anteriorly | pubic symphosis |
| Joint where each coxal bone meets sacrum posteriorly | sacrioiliac joints |
| What are the functions of the pelvic girdle? | form hips, attach leg bones to axial skeleton |
| Coxal bones consist of 3 fused bones | ilium (top), ischium (underneath in back), pubis (anterior) |
| “vinegar cup” | acetabelum |
| What does the acetabelum hold? | head of femur |
| If acetebelum is improperly formed the bone may slip out of place causing | hip dysplasia |
| What is the ilium composed of? | iliac crest, anterior superior iliac spine, greater sciatic notch, obturator foramen |
| Thickened superior margin of the hip | iliac crest |
| Used to find location for hip injections | anterior superior iliac spine |
| Site where sciatic nerve passes, must be divided | greater sciatic notch |
| Large opening, nearly closed up-few blood vessels and nerves pass through | obturator foramen |
| Structure of pelvis | pelvic brim, false pelvis, true pelvis |
| Imaginary line drawn from sacral promontory to pubic symphosis | pelvic brim |
| Area above pelvic brim, does not constrict during childbirth, front wall muscle | false pelvis |
| 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 |
| Modifications of female pelvis for childbearing | wider, shallower, pubic arch 80-90 degrees, true pelvis larger inlet-outlet, sacrum wider |
| Segmented structure/can only hold weight if arched | arches of foot |
| What are the arches of the foot composed of? | bones, ligaments |
| Strong bands of connective tissue | ligaments |
| Bones and ligaments are arranged into 3 arches | 2 longitudinal, 1 transverse |
| Functions of the arches of the foot | distribute body weight, make walking and running more economical, provides strength |
| Tendons and ligaments are composed of | fibrous connective tissue |
| Usually attach muscle to bone | tendons |
| Collagen fibers of tendon blend with | muscle fibers at one end |
| Parallel collagen fibers are | shiny |
| Bind 2 bones together | ligaments |
| Ligaments are associated with | joints |
| Ligaments limit range of motion | stability |
Created by:
charleen920
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