12/14/2023 0 Comments Is scapula a flat bone![]() ![]() Flat bones (Ossa plana) are thin and have broad surfaces. Ossa brevia can be found in the wrist and ankle (Carpus and Tarsus). They consist of spongy bone covered by a thin layer of compact bone. Short bones (Ossa brevia) are cubical in shape. Typical long bones are the tubular bones of the limbs (Humerus, Radius, Ulna, Femur.). The ends consist of spongy bone surrounded by a thin layer of compact bone. The long cylindrical body (Corpus, Diaphysis) consists of compact bone and has a central medullar cavity. They are tubular in shape and have two ends. Long bones (Ossa longa) are longer than they are wide. Based on shape, bones (Ossa) can be classified as follows: Note:The scapula also articulates with the humerus at the glenohumeral joint, and with the clavicle at the acromioclavicular joint.This image presents the most common types of bones. ![]() Hence, the correct option is B (The second and seventh ribs). With the arm resting by the side, the medial or vertebral border runs almost parallel to the spinal column. The lateral or axillary border runs from the inferior angle to the lateral angle of the scapula.ģ) Medial Border- This is thin and extends from superior to inferior angle. The depth of the supraspinous fossa is filled by the supraspinatus muscle.ģ) Normally, the scapula rests at a position on the posterior thorax approximately 2 inches from the midline, between the second through seventh ribs.Īdditional Information:The scapula contains 3 borders.ġ) Superior Border-It is thin and shorter.Ģ) Lateral Border- This is thick and presents in an infraglenoid tubercle at the upper end. Dorsal Surface-The prominent spine of the scapula divides the surface into a smaller supraspinous fossa and a larger infraspinous fossa. This part of the bone is almost rod-like and acts a lever for the action of serratus anterior in overhead abduction of the arm. ![]() A thick ridge adjoins the lateral border. It is present in the dorsal part of the upper thorax.Ģ) It is concave and is directed medially and forwards. Let’s define the scapula first and find the location of the bone-ġ) Scapula is the large triangular bone that helps in formation of the shoulder joint. Hint: Scapula is also known as shoulder bone,shoulder blade,wing bone.It is located in the upper thorax region.It connects the upper arm bone with the collar bone. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |