The patella is the knee-cap and protects the knee joint. The scapula is the shoulder blades and is related to arm and shoulder movement.
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The patella and scapula are similar in form as they are both flat and triangular bones. In terms of function, both bones provide attachment points for muscles that aid in movement: the patella assists in knee extension by increasing the leverage of the quadriceps muscles, while the scapula provides attachment for muscles that move the shoulder joint and stabilize the upper arm.
The medical terminology combining form meaning scapula is "scapul-" or "scapulo-".
The clavicle (collarbone) and the humerus (upper arm bone) are attached to the scapula (shoulder blade) to form the shoulder joint.
The clavicle articulates with the scapula at the acromion process, forming the acromioclavicular joint.
The humerus articulates with the scapula at the glenoid fossa to form the shoulder joint. Specifically, the head of the humerus sits in the shallow, concave glenoid cavity of the scapula. This ball-and-socket joint allows for a wide range of motion in the shoulder.
Groups of similar cells working together for a similar function are called tissues. The four tissue types are; connective, nervous, epithelial, and muscular.tissuesTissues