8.2 Articular Form and Function

Created by

Cards (25)

Synovial joints move by linear, angular, and rotational motions. Movements occur in one or more axes of rotation: superior-inferior axis, lateral-medial axis, anterior-posterior axis
Synovial joints freely movable diarthrosis joints
Abduction is movement away from longitudinal axis of body in frontal plane
Adduction is movement back to center
Flexion is movement in anterior-posterior plane which decreases angle between bones of joint
Extension an anterior-posterior plane increases angle between bones of joint
Hyper extension is any movement where limb extended beyond its limits, resulting in joint damage
Special angular motion, circumduction involves moving the arm in a circle
Left/right rotation is the rotation of the head
Internal/medial rotation is the limb rotating inward
External/lateral rotation is the limb rotating outward
Pronation is moving the hand to face back
Supination is moving the hand to face forward
Eversion is a motion of the foot turning the sole outward
Inversion is the motion of turning the sole inward
Dorsiflexion elevates distal portion of foot and toes like digging in the heels
Plantar flexion elevates the heel and proximal portion like standing on toes
Lateral flexion is when vertebral column bends to side
Protraction is moving body part anteriorly in horizontal plane
Retraction is movement posteriorly in horizontal plane
Opposition is movement of thumb with the palm to finer, pad to pad
Reposition returns thumb and finger to normal position
Elevation/depression is when the structure moves in a superior or inferior direction
What classifications of synovial joints are monaxial, biaxial, and triaxial?
Monaxial includes plane joint, pivot joint, and hinge joint
Biaxial includes saddle joint and condylar joint
Triaxial include ball-and-socket joint
Give the proper term for moving humerus away from midline of body, turning palms so they face forward, and bending the elbow
abduction
supination
flexion