Pelvic Girdle Lower Extremities and Articulations Obturator Foramen
Pelvic Girdle, Lower Extremities and Articulations
* * * * Obturator Foramen
Comparison of Male and Female Pelvic Structure Female 80 -90 0 Male 50 -60 0 Image from Table 7. 4
Comparison of Male and Female Pelvic Structure Characteristic Female Male Bone thickness Lighter, thinner, and smoother Heavier, thicker, and more prominent markings Pubic arch/angle 80˚– 90˚ 50˚– 60˚ Acetabula Small; farther apart Large; closer together Sacrum Wider, shorter; sacral curvature is accentuated Narrow, longer; sacral promontory more ventral Coccyx More movable; straighter Less movable; curves ventrally
Foot
Articulations & Body movements • Holds the body’s bones together • Allow your rigid skeleton some flexibility Classified by degree of movement: • Fibrous (immoveable) – sutures • Cartilaginous (rigid, slightly moveable) – Intervertebral disc, puic symphysis, costal cartilage • Synovial joints (freely moveable) – Shoulders, elbows, knees
Synovial Joints • Characteristics: – Freely moveable – The bones are separated by a cavity (usually fluid filled) – Most joints in the body
Synovial joints *Know the name of the type of synovial joint, and where you can find it! 1. Plane (Gliding) Plane – Intercarpal/ intertarsal joints 2. Hinge (only allow movement in one plane- back and forth) – Knee & elbow 3. Pivot (allows bones to rotate around another) – Neck – Radius and ulna Hinge
Pivot Joints
Condyloid Synovial Joints 4. Condyloid (Ellipsoidal) – Knuckles 5. Saddle (side to side motion) Saddle – Thumb 6. Ball and Socket (most freely moveable joints) – Shoulders and hips Ball & Socket
- Slides: 14