Anatomy; Muscle quiz 3
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22 terms
Terms | Definitions |
|---|---|
 Definition of a synovial joint | a joint where bones are connected by a fluid filled joint capsule. |
| plane joint | Bones barely slide past each other Nonaxial Example: carpal joints |
| hinge joint | Bones swing back and forth like a cabinet door Uniaxial Example: elbow and knee |
| pivot joint | Bones rotate around a longitudinal axis Uniaxial Example: proximal joint of the radius and ulna |
| condyloid | ends are convex/concave Biaxial Example: knuckle joints (metacarpophalangeal joints) |
| saddle | Bone ends are saddle shaped Biaxial Example: thumb carpometacarpal joint |
| ball and socket | Rounded head fits into cup shaped socket Multiaxial Example: hip and shoulder |
| flexion | decrease the angle of the joint |
| extension | increase the angle of the joint |
| abduction | move away from the midline of the body |
| adduction | move towards the midline of the body |
| rotation | rotate around a longitudinal axis |
| circumduction | one end stays still, other moves in a circle making a cone shaped movement |
| pronation | a palms-down motion |
| supination | a palms-up motion |
| inversion | turning the ankle in towards the body |
| eversion | turning the ankle away from the body |
| dorsiflexion | standing on the heels |
| plantar flexion | standing on the toes |
| agonist/prime mover | muscle that is primarily responsible for a particular action |
| antagonist | muscle that does the opposite of the agonist |
| synergist | muscle that works with other muscles to reduce unnecessary movements |
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