The appendicular skeleton is divided into six major regions: Shoulder girdle (4 bones) – Left and right clavicle (2) and scapula (2). … Feet and ankles (52 bones) – Left and right tarsals (14) (ankle), metatarsals (10), proximal phalanges(10), intermediate phalanges (8) and distal phalanges (10).
What part of the body is the scapula?
The scapula, or shoulder blade, is a large triangular-shaped bone that lies in the upper back.
What bones are part of the axial skeleton?
The axial skeleton includes the bones that form the skull, laryngeal skeleton, vertebral column, and thoracic cage. The bones of the appendicular skeleton (the limbs and girdles) “append” to the axial skeleton.
How is scapula attached axial skeleton?
It is attached on its medial end to the sternum of the thoracic cage, which is part of the axial skeleton. The lateral end of the clavicle articulates (joins) with the scapula just above the shoulder joint.Which bones form the appendicular skeleton?
- Upper Limb.
- Shoulder girdle: Clavicle. Scapula. Arm. Humerus. Forearm. Radius. Ulna. Wrist or carpal bones. Scaphoid. Lunate. …
- Lower Limb.
- Pelvic girdle (hip or coxal bone) Ilium. Ischium. Pubis. Thigh. Femur. Leg. Tibia. Fibula. Tarsal bones. Talas.
Where is the acromion of the scapula?
The acromion (plural: acromia), also known as the acromial process, is a small projection of the scapula that extends anteriorly from the spine of the scapula.
Where is the scapula bone?
scapula, also called shoulder blade, either of two large bones of the shoulder girdle in vertebrates. In humans they are triangular and lie on the upper back between the levels of the second and eighth ribs.
Which bone feature of the scapula is posterior?
BordersSuperior, lateral and medialProcessesCoracoid, acromionWhat is the acromion process of the scapula?
In human anatomy, the acromion (from Greek: akros, “highest”, ōmos, “shoulder”, plural: acromia) is a bony process on the scapula (shoulder blade). Together with the coracoid process it extends laterally over the shoulder joint. The acromion is a continuation of the scapular spine, and hooks over anteriorly.
Is the scapula attached to the ribs?The scapula is a flat, triangular-shaped bone (colloquially as the “shoulder blade”). It is located in the upper thoracic region on the dorsal surface of the rib cage. It connects with the humerus at the glenohumeral joint as well as the clavicle at the acromioclavicular joint to form the shoulder joint.
Article first time published onIs the scapula a flat bone?
Your scapula is a flat bone that’s commonly referred to as your shoulder blade. You have two of these triangle-shaped bones in your upper back. The muscles that allow your arms to rotate attach to your scapula.
What are the 3 main parts of the axial skeleton?
The axial skeleton forms the central axis of the human body and consists of the skull, vertebral column, and thoracic cage.
What is axial skeleton?
The axial skeleton consists of the braincase (cranium) and the backbone and ribs, and it serves primarily to protect the central nervous system. The limbs and their girdles constitute the appendicular skeleton.
What is Zygoma bone?
The zygomatic bone (or zygoma) is a paired, irregular bone that defines the anterior and lateral portions of the face. The zygomatic complex is involved in the protection of the contents of the orbit and the contour of the face and cheeks.[1]
Why is a bone like the scapula shoulder blade considered part of the appendicular skeleton and not the axial skeleton?
(Q004) Why is a bone like the scapula (shoulder blade) considered part of the appendicular skeleton and not the axial skeleton? The scapula is part of the appendicular skeleton is because it has the appendix bones while the axial bone is connected to the humerus and the clavicle is the shoulder cap bone.
What are the 4 major parts of the appendicular skeleton?
The appendicular skeleton includes the bones of the shoulder girdle, the upper limbs, the pelvic girdle, and the lower limbs.
Is Tarsals axial or appendicular?
Bones of the Appendicular skeleton: 2 pelvis bones. 8 bones in the legs (femur, tibia, patella, and fibula) 56 bones in the feet (tarsals, metatarsals, phalanges, and sesamoid)
Is the scapula a sesamoid bone?
The scapula is a sesamoid bone. phenomenon it was designed to replicate. … of the scapula press against the ribs and is held there by the upper part of the m.
Is the scapula a joint?
The shoulder is made up of three bones: the scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone). Two joints in the shoulder allow it to move: the acromioclavicular joint, where the highest point of the scapula (acromion) meets the clavicle, and the glenohumeral joint.
Is the sternum in the axial skeleton?
The 80 bones of the axial skeleton form the vertical axis of the body. They include the bones of the head, vertebral column, ribs and breastbone or sternum.
Is the acromion anterior or posterior?
On the anterior side, facing into the body, is a right-angled process called the coracoid process. While at the superior lateral edge of the scapula the glenoid cavity, which serves as the socket for the head of the humerus bone. The glenoid cavity always points laterally, while the spine and acromion are posterior.
What is acromion bone?
The acromion is the bony tip of the outer edge of your shoulder blade (scapula) that comes off the top of the back side of this bone. It meets with the end of your collar bone (clavicle) at your shoulder. Shoulder impingement occurs when the tendon rubs against the acromion.
What bone is the acromion part of?
Acromion. The roof (highest point) of the shoulder that is formed by a part of the scapula. Tendons. The tough cords of tissue that connect muscles to bones.
Where does the scapula meets the acromion process?
The acromion is a bony projection off the scapula. The clavicle (collarbone) meets the acromion in the acromioclavicular joint. The coracoid process is a hook-like bony projection from the scapula.
Is the acromion and the acromion process the same thing?
That’s the acromion process, and it folds over the shoulder to connect with the clavicle, or collar bone. The thin, long feature that attaches to the acromion is known as the scapular spine.
What are the 3 types of acromion?
They described three types of acromion: Type I (flat), Type II (curved), and Type III (hooked) (Fig. 1).
What is the only skeletal connection between the scapula and the thorax?
The scapula and clavicle articulate with the bones of the thorax at one point only, here, at the sternoclavicular joint. The lateral end of the clavicle articulates with this projection on the scapula, the acromion, forming the acromio-clavicular joint.
Is the spine of the scapula anterior or posterior?
Of the three borders, the anterior is attached to the dorsal surface of the bone; the posterior, or crest of the spine, is broad, and presents two lips and an intervening rough interval.
What are the bony landmarks of the scapula?
- Acromion.
- Coracoid process.
- Spine of the scapula.
- Superior angle.
- Inferior angle.
- Lateral border.
- Medial border.
- Supraspinous fossa.
What is the main function of the scapula?
The scapula is an important bone in the function of the shoulder joint. It engages in 6 types of motion, which allow for full-functional upper extremity movement including protraction, retraction, elevation, depression, upward rotation, and downward rotation.
What holds the scapula in place?
The scapula is only attached to the thorax by ligamentous attachments at the acromioclavicular joint and through a suction mechanism provided by the muscular attachments of the serratus anterior and subscapualaris.
