Joints Flashcards
Fibrous Joints - structure/function
United by fibrous tissue; little to no mobility ( synarthroses)
Cartilaginous Joints - structure
United by hyaline cartilage, or fibrocartilage; 2 types.
Primary Cartilaginous Joints
Permits slight bending during early life (synchondroses); temporary.
Secondary Cartilaginous Joints
Slightly moveable joints (symphyses).
Synovial Joint - function
Most common; provide free movement between bones they join (diarthroses).
Plane Joints
Permit gliding or sliding movements in a plane.
Hinge Joints
Permit flexion and extension only; movements occur in one plane around a single axis that runs transversely.
Saddle Joints
Permit abduction and adduction; and flexion and extension; occur about two axes each at 90 degree to each other.
Condyloid Joints
Permit flexion and extension; and abduction and adduction; move about two axes; one plane usually “freer” than the other.
Ball and Socket Joints
Allow movement in multiple axes and planes; flexion/extension, abduction/adduction, medial/lateral rotation, and circumduction.
Pivot Joints
Permit rotation around a central axis.
Hilton Law
Nerves supplying a joint also supply the muscles moving the joint and skin covering their distal attachments.
Articular nerves transmit sensory impulses from the joint that contribute to the sense of ______.
Proprioception: Provides awareness of movement and position of parts of the body.
