Chapter 8- movement and joints

circumduction

A circular type of movement made at a ball-and-socket joint such as the shoulder (as in pitching a softball)

planter flexion

Describes the tiptoe position, relative to the foot

abduction

Movement away from the midline of the body

. bursae

Small sacs of synovial fluid that ease movement at the joint.

extension

Straightening of a joint so that the angle between bones increases

slightly movable joints

The symphysis pubis and intervertebral discs, for example

Hinge

The type of freely movable joint at the elbow. The type of joint formed by the distal finger bones

ball-and-socket

The type of joint formed by the acetabulum and the head of the femur. The type of joint formed by the head of the humerus and the glenoid cavity

suture

The type of joint that connects the frontal and parietal bones example of an immovable joint

pronation

Turning the forearm so that the hand is facing downward (toward the ground)

flexion

Type of movement achieved as the forearm bends toward the arm (decreasing the angle at the joint)

dorsiflexion

describes bending the foot towards the shin

adduction

movement toward the midline of the body

ligament

tough strands of connective tissue that connect bone to bone

supination

turning the forearm so that the palm is facing the sky