Chapter 7: The Skeletal System Appendicular Division
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Created by:
mjandres81 on April 28, 2012
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11 terms
Terms | Definitions |
|---|---|
 The appendicular skeleton is involved in changing your position in the external environment | Standing Walking Sitting Dressing Driving A Car |
| The Pectoral Girdle | Includes the S-shaped clavicle (collarbone) and the flattened scapula (shoulder blade) The clavicle articulates with the manubrium of the sternum and is the only direct connection between the axial skeleton and the pectoral girdle The scapula is attached to the clavicle anteriorly but has no connection to the actual axial skeleton; instead skeletal muscles and ligaments support it |
| The upper limb consists of the | Brachium (humerus) Antebrachium (ulna and radius) Wrist (carpals) Hand (metacarpals and phalanges) |
| The Wrist and Hand | The carpal bones are the 8 bones of the wrist The metacarpal bones (5) articulate with the distal carpal bones and make up the palm of the hand The 14 phalanges of the hand make up the finger bones |
| The Pelvic Girdle | Supports and protects the lower viscera and developing fetus in females The pelvic girdle consists of two ossa coxae bones The bones of the pelvic girdle and lower limb are much more massive than their homologues of the upper limb |
| The male and female pelvis contains numerous differences | Generally the male pelvis is heavier with more prominent markings due to the larger muscles attached to it |
| Differences are noted as how the female compares to the male | Enlarged outlet, due to wider ischial spines Less curvature of the sacrum and coccyx Wider, more circular pelvic inlet Broader, lower pelvis Widely fanning ilia Pubic angle greater than 100 degrees |
| The Lower Limb | Responsible for transferring the body weight to the ground |
| The Lower Limb consists of the following structures | The Femur (thigh) The Patella (kneecap) The Tibia (leg) The Fibula (leg) Tarsal Bones and the Ankle Metatarsal Bones and Phalanges of the Foot |
| The Ankle and Foot | There are 7 tarsal bones that make up the ankle The metatarsal bones (5) articulate with the distal tarsal bones and make up the arches of the foot The 14 phalanges of the foot make up the toe bones |
| Individual Variation in the Skeletal System | Your skeleton can reveal information about you, such as your race, medical history, gender, body size, muscle mass, and age As you age, a number of changes and events take place in the skeletal system |
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