Lab 5: Joints & Bony Landmarks

Vocabulary practice flashcards covering joint movements, functional joint classifications, and structural joint classifications from Lab 5.

Flexion

A joint movement in which the joint angle decreases in the frontal plane.

Extension

A joint movement in which the joint angle increases in the frontal plane.

Abduction

Movement away from the midline in the sagittal plane.

Adduction

Movement toward the midline in the sagittal plane.

Rotation

Movement around a central axis.

Circumduction

Conical circular movement in multiple planes of movement.

Synarthrosis

A functional joint classification referring to immovable joints.

Amphiarthrosis

A functional joint classification referring to slightly movable joints.

Diarthrosis

A functional joint classification referring to freely movable joints.

Fibrous Joints

A structural joint classification where bones are connected by dense CT and there is no joint cavity.

Cartilaginous Joints

A structural joint classification where bones are connected by cartilage and there is no joint cavity.

Synovial Joints

A structural joint classification where bones are separated by a fluid-filled joint cavity.

temporomandibular joint functional / structural type

synovial and dyarthrosis

intervertebral joints- between vertebral bodies

cartilaginous/ amphiarthrotic

intervertebral joints- between vertebral facets

synovial/diarthrotic

Skull- squamous suture

fibrous/ synarthrotic

Sacroiliac joint

synovial/dyarthrotic

Elbow joint

synovial/diarthrotic

Hip joint

synovial/diarthrotic

which joint allows greatest ROM

hip- because of ball and socket joint

why are synarthroses important

provide secure anchoring for body and protection for brain

Vertebral body:

allow little movement

vertebral facets

allow more movement