PNB 2264 Lecture Notes - Lecture 8: Axial Skeleton, Shoulder Joint, Synovial Membrane

• School: UConn
• Department: Physiology and Neurobiology
• Course: PNB 2264
• Professor: John Redden

Document Summary

Articulation joint - meeting place of two or more bones. Ex) the shoulder joint connects the humerus and scapula. Range of motion - the normal extent of mobility for a specific joint movement. Degrees of freedom - number of axes at which movement in a joint occurs. The type of connection between bones in a joint (structure) determines function. Sutures - connects membranous bones of the skull with short fibers. Fontanels - incompletely ossified membranous areas present in fetal and infant skulls (ossifies by age 2) Bones connected by a interosseous ligament (longer fibers) Hyaline cartilage connects bones or parts of bones. Cushions, lubricates (prevents heat build up), nourishes joint. Bursa - pillow filled with synovial fluid. Tendon sheath - sleeve filled with synovial fluid. 1 axis of rotation, degree of freedom, plane of movement, movement pair. Concave surface articulating with a convex surface. Cylindrical shape rotates within a ring of bone or ligament.