Function. It presents two surfaces and three borders. Its superior surface is concave; it assists in forming the supraspinatous fossa, and gives origin to part of the supraspinatus.
Why do we need a scapula?
The scapula, better known as the shoulder blade, is a triangular bone that serves as a joining force between the clavicle and the humerus. This bone is located posteriorly (on the back half of the body). The scapula plays an important role in stabilizing the other bones involved in the rhythm of shoulder motion.
Does the scapula protect vital organs?
Each rib extends from the spinal cord and wraps around the body in a semicircle. The ribs encircle vital organs, such as the lungs, and connect to the costal cartilage in the front of the body. … The scapula, or shoulder blade, is a flat triangular bone located in the back of the shoulder.
What are the 3 processes of the scapula?
The scapula has three angles (superior/medial, lateral, inferior), three borders (medial, lateral/axillary, and superior), and two surfaces (ventral and dorsal). The scapula has three processes: the acromion, the spine, and the coracoid process.
What muscles attach to the scapular spine?
|Levator Scapulae||insertion||medial border|
|Trapezius||insertion||spine of scapula|
|Deltoid||origin||spine of scapula|
What level of the spine is the scapula?
Scapula – posterior aspect
The medial end of the spine, the root of the spine, lies at the level of the spinous process of the third thoracic vertebra. The spine of scapula and the acromion are subcutaneous and are palpable.
What is attached to the scapula?
The scapula provides attachment sites for many muscles including the pectoralis minor, coracobrachialis, serratus anterior, triceps brachii, biceps brachii, and the subscapularis.
Does the scapula protect the lungs?
The scapula protects the posterior (or back) of the chest, offering additional shielding to the rib cage and lungs.
What are the 3 largest bones?
The three long bones are your femur, your tibia and your fibula. The fourth bone is your small patella, which is better known as the kneecap. Your femur, or thighbone, is the largest bone in your body.
What is the scapula commonly known as?
Scapula, also called shoulder blade, either of two large bones of the shoulder girdle in vertebrates.