The conoid ligament attaches to the clavicle at the conoid tubercle, which is posterior medial to the trapezoid tubercle. From superior to inferior, the conoid ligament appears as an inferior pointing cone.
What muscle attaches to the coracoid tubercle?
The coracoid process serves as the attachment site for several muscles. The pectoralis minor is attached to the medial aspect of the coracoid. The coracobrachialis is attached to the tip of the process on the medial side, and the short head of the biceps is attached to the tip of the process on the lateral side.
What is a conoid tubercle of clavicle?
The conoid tubercle also known as the coracoid tuberosity (not to be confused with the coracoid process of the scapula) is a bony prominence on the inferior surface of the lateral third of the clavicle.
What bone articulates with the conoid tubercle?
Clavicle Bone Marking: Conoid tubercle (tuberculum conoide-um) is a bump on the inferior surface of the bone, near the acromial end. It is an attachment point for the conoid ligament. The conoid ligament is a part of the coracoclavicular ligament, which attaches the clavicle to the coracoid process of the scapula.What attaches to the trapezoid line?
The trapezoid ligament is a broad quadrilateral ligament that is quite thin. Its positioned almost horizontally. … The trapezoid ligament arises from the upper surface of the coracoid process. It attaches to the trapezoid line (or ridge) on the inferior surface of the clavicle.
What attaches to greater tubercle of humerus?
The greater tuberosity is the prominent area of bone at the top of the humerus and is the attachment for the two large, powerful rotator cuff muscles – supraspinatus and infraspinatus.
What attaches Infraglenoid tubercle?
Long head—The origin of the long head is the infra-glenoid tubercle of the scapula. Because it attaches to the scapula, the long head not only extends the elbow but will also have a small action on the glenohumeral or shoulder joint.
Is the clavicle attached to the sternum?
The sternoclavicular (SC) joint is the linkage between the clavicle (collarbone) and the sternum (breastbone). The SC joint supports the shoulder and is the only joint that connects the arm to the body. … This cartilage helps the bones glide easily along each other as you move your arm and shoulder.What attaches to the trapezoid line and Conoid tubercle?
Structure and Function The conoid ligament attaches to the clavicle at the conoid tubercle, which is posterior medial to the trapezoid tubercle. From superior to inferior, the conoid ligament appears as an inferior pointing cone.
What bone pivots on the capitulum?The loose union of the capitulum of the humerus and the head of the radius allows the radius to pivot as well as flex and extend. The pivoting of the radius allows for the supination and pronation of the hand at the wrist.
Article first time published onWhat does the conoid ligament do?
The conoid ligament limits anterior movement of the scapula with respect to the clavicle. The trapezoid limits posterior movement between these two bones. Both ligaments prevent the clavicle from overriding the lateral end of the clavicle.
What is a tubercle in a bone?
A tubercle is a small rounded point of a bone. It also refers to a nodule attached to bone, mucous membrane (moist layer lining parts of the body), or skin.
Where is the Infraglenoid tubercle?
The infraglenoid tubercle is the part of the scapula from which the long head of the triceps brachii muscle originates. The infraglenoid tubercle is a tubercle located on the lateral part of the scapula, inferior to (below) the glenoid cavity.
Where does the coracoclavicular ligament attach?
The coracoclavicular ligament is a ligament of the shoulder. It connects the clavicle to the coracoid process of the scapula.
What connects the coracoid and the acromion processes?
The coracoacromial ligament (CAL) connects the acromion and coracoid process of the scapula, forming an osseoligamentous static restraint to superior humeral head displacement.
What attaches to the coracoid process?
The coracoid also serves as a critical anchor for many tendinous and ligamentous attachments. These include the tendons of the pectoralis minor, coracobrachialis, and short head of the biceps brachii muscles, and the coracoclavicular, coracohumeral, coracoacromial, and transverse scapular ligaments.
Which nerve Innervates the muscle that attaches to the infraglenoid tubercle of the scapula?
The triceps brachii muscle is the sole muscle occupying the posterior compartment of the upper arm and is innervated by the radial nerve (C6–C8). It is composed of three tendinous origins: the long, lateral, and medial heads. The long head originates at the infraglenoid tuberosity of the scapula.
Which of the following muscles originates from the infraglenoid tubercle?
Triceps brachii muscle has three heads. The long head originates from the infraglenoid tubercle of the scapula; the lateral head from the upper half of the posterior surface of the shaft of the humerus and the medial head from the posterior surface of the lower half of the shaft of the humerus.
What muscle attaches to lesser tubercle of humerus?
The subscapularis muscle originates at the subscapular fossa and inserts into the lesser tubercle of the humerus.
Which muscle inserts on the greater tubercle of the humerus quizlet?
which muscle inserts on the greater tubercle of the humerus? the infraspinatus typically originates on the infraspinous fossa of the scapula and inserts into the greater tubercle of the humerus posterior to the insertion of supraspinatus.
What muscles have a distal attachment to the greater tubercle?
The distal attachments of the three rotator cuff muscles that insert into the greater tubercle of the humerus can be abbreviated as SIT when viewed from superior to inferior (for supraspinatus, infraspinatus, and teres minor), or SITS when the subscapularis muscle, which attaches to the lesser tubercle of the humerus, …
What muscles attach to clavicle?
Muscular attachments to the clavicle include the sternocleidomastoid, pectoralis major, and subclavius muscles proximally and the deltoid and trapezius muscles distally.
What ligaments are attached to the clavicle?
The clavicle has two ligaments involving the shoulder that help with stabilizing it to nearby bony structures: The acromioclavicular ligament and the coracoclavicular ligament both stabilize the clavicle to the shoulder blade.
How is the collarbone attached?
Your collarbone, called the clavicle, connects to the shoulder blade at the acromioclavicular (AC) joint and to your chest bone, called the sternum, at the sternoclavicular (SC) joint. Ligaments attach the bones together to hold the AC joint together.
Which landmark of the humerus attaches to the scapula?
The lateral angle of the scapula is the location of the glenoid cavity; this is where the humeral head articulates with the scapula. At the margins of this cavity, a fibrocartilagenous structure called the glenoid labrum acts to deepen the cavity as to accommodate more of the humeral head.
Is clavicle axial or appendicular?
The appendicular skeleton is everything else. It’s everything that attaches on to the axial skeleton. Think “appendages”. The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.
How does the clavicle attach to the shoulder?
A group of ligaments that connect the humerus to the socket of the shoulder joint on the scapula to stabilize the shoulder and keep it from dislocating. Ligaments that attach the clavicle to the acromion. Ligaments that connect the clavicle to the scapula by attaching to the coracoid process.
What bone pivots on the capitulum quizlet?
Simultaneously, the head of the radius spins on the capitulum of the humerus during both pronation and supination. pivot type of synovial joint. The radius moves around the relatively fixed distal end of the ulna.
What does the capitulum do?
Anatomical terms of bone In human anatomy of the arm, the capitulum of the humerus is a smooth, rounded eminence on the lateral portion of the distal articular surface of the humerus. It articulates with the cupshaped depression on the head of the radius, and is limited to the front and lower part of the bone.
Is the capitulum proximal or distal?
The trochlea and capitulum are the rounded, smooth, knuckle-like surfaces at the anterior and distal end of the humerus.
What is the annular ligament?
The annular ligament is a strong fibro-osseous circular structure that has attachments to the anterior and posterior margins of the radial notch (lesser sigmoid cavity) of the ulna. The annular ligament forms about four-fifths of a circle. The ligament subdivides into three layers:[2] Deep capsular structure.
