أكاديميا - كولنز معاجم الجيب العلمية - البيولوجيا انكليزي - فرنسي - عربي الحرف _ j

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joint articulation f

A joint is a point in the skeleton where two or more bones meet, making movement possible.
There are three types of mobile joints in mammals: (a) ball and socket joints that allow movement at different levels.

Bone.
Cartilage.
Synovial membrane.
Synovial fluid.
Laces
wallet
bone

(b) Hinge joints allow movement in only one plane.

Finger joint

As a lesson
ulna
attached

(c) Gliding joints exist where one of two flat surfaces slides over the other, and these joints allow only slight movement.

Herniated disc
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