coracoid process – what muscle inserts on this process? course hero

Full Answer

What muscle inserts on the coracoid process?

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 muscle originates on the Coronoid process?

The coracobrachialis is a slender muscle that originates from the deep surface of the coracoid process of scapula. The muscle fibers run inferolaterally towards the humerus. They insert onto the anteromedial surface of the humeral shaft, between the brachialis muscle and the medial head of triceps.

What inserts at the coracoid process of the scapula?

Pectoralis minor muscle – it inserts into the coracoid process. Its actions consist of protraction and depression of the scapula. The muscle is innervated by the medial pectoral nerve.

What shoulder joint muscles attach 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 coracocla- vicular, coracohumeral, coracoacromial, and transverse scapular ligaments.

Which muscle is inserted on the coronoid process of ulna?

The brachialisThe brachialis had a musculoaponeurotic insertion onto the elbow capsule, coronoid, and proximal ulna.

What does the coracoid process articulate with?

The coracoid articulates with the forward edge of the sternum and with the scapula, humerus, and furcula.

What attaches to the coronoid process?

At the junction of this surface with the front of the body is a rough eminence, the tuberosity of the ulna, which gives insertion to a part of the Brachialis; to the lateral border of this tuberosity the oblique cord is attached.

What is a coracoid process?

The coracoid process is a hook-shaped bone structure projecting anterolaterally from the superior aspect of the scapular neck.

What tendon is attached to 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.

How do you find the coracoid process?

1:283:28Palpation of the Shoulder Region - Part 2 - Clinical ExaminationYouTubeStart of suggested clipEnd of suggested clipFrom here palpate the coracoid process of the scapula in the infra clavicular. Fossa. The processMoreFrom here palpate the coracoid process of the scapula in the infra clavicular. Fossa. The process can be located as it moves with the scapula while the arm is flexed. Forward.

What are the 3 shoulder muscles?

The deltoid muscles have three parts, or heads:Anterior deltoids: The front delts that help move your arm forward. They connect to your clavicle. ... Lateral deltoids: Side delts that help move your arm out to the side, as well as up and down. ... Posterior deltoids: Rear delts that help move your arm backward.

How many ligaments attach to the coracoid process?

Although the coracoclavicular ligament complex functions as a single ligament, it is composed of two distinct ligaments. The two coracoclavicular ligaments (conoid and the trapezoid) attach the coracoid to the distal end of the clavicle and have an average length of about 1.3 cm [ 11 ].

How many muscles attach to the coracoid process?

junction of the vertical and horizontal parts of the coracoid process is called the "elbow" or "angle." Numerous ligaments and 3 muscles are anchored to the coracoid process ( Figure 1). ...

What attaches to coronoid process elbow?

The coronoid process has three soft tissue insertions: the anterior joint capsule of the elbow, the brachialis muscle and the medial ulnar collateral ligament (MUCL).

What does the Coronoid process connect to?

The coronoid process features the temporal crest, which serves as an attachment point for the temporalis muscle. The condylar process has an articular surface (the condyle), via which the mandible articulates with the articular tubercle of the temporal bone to form the temporomandibular joint.

Where does coronoid process attach?

Between this ridge and the anterior border is a grooved triangular area, the upper part of which gives attachment to the temporalis, the lower part to some fibers of the buccinator....Coronoid process of the mandibleTA98A02.1.15.032TA2869FMA52833Anatomical terms of bone7 more rows

What is the coracoid process?

The coracoid process (from Greek κόραξ, raven) is a small hook-like structure on the lateral edge of the superior anterior portion of the scapula (hence: coracoid, or "like a raven's beak"). Pointing laterally forward, it, together with the acromion, serves to stabilize the shoulder joint.

Which part of the coracoid process is an elevated ridge for the attachment of the trapezoi?

On the medial part of the root of the coracoid process is a rough impression for the attachment of the conoid ligament; and running from it obliquely forward and lateralward, on to the upper surface of the horizontal portion, is an elevated ridge for the attachment of the trapezoid ligament.

Why is the surgeon's lighthouse called the surgeon's lighthouse?

It is otherwise known as the "Surgeon's Lighthouse" because it serves as a landmark to avoid neurovascular damage. Major neurovascular structures enter the upper limb medial to the coracoid process, so that surgical approaches to the shoulder region should always take place laterally to the coracoid process.

Which ligament is formed by the conoid ligament and trapezoid ligament?

The coracoclavicular ligament – to the clavicle. (The ligament is formed by the conoid ligament and trapezoid ligament .) The coracoacromial ligament – to the acromion. The coracohumeral ligament – to the humerus. The superior transverse scapular ligament – from the base of the coracoid to the medial portion of the suprascapular notch.

Which process changes direction?

The coracoid process is a thick curved process attached by a broad base to the upper part of the neck of the scapula; it runs at first upward and medialward; then, becoming smaller, it changes its direction, and projects forward and lateralward.

Which muscle is the site of attachment for the medial humerus?

The short head of biceps brachii muscle – to radial tuberosity. The coracobrachialis muscle – to medial humerus.

Which part of the subscapularis is flattened from before backwards?

The ascending portion, flattened from before backward, presents in front a smooth concave surface, across which the subscapularis passes.

Which part of the arm flexes and adducts the arm at the shoulder?

Coracobrachialis flexes and adducts the arm at the shoulder. The short head of the Biceps Brachii also attaches to the coracoid process. It inserts at the radial tuberosity and bicipital aponeurosis and fascia of the forearm.

What is the muscle that attaches to the shoulder blade?

These are just three of myriad muscles that attach to some aspect of the shoulder blade. Pectoralis Minor is a small muscle deep to pectoralis major, the larger muscle of the chest. It originates on ribs 3-5 near the sternum and then inserts at the coracoid process. Its job is to rotate the scapula and draw it inferiorly, ...

Where does the coracobrachialis muscle originate?

The coracobrachialis muscle originates from the coracoid process of the scapula (shoulder blade). The coracoid process is a bony prominence that sticks out from the top, front border of the shoulder blade. This prominence is shaped like a hook, and it serves as a place of attachment for several other muscles of the shoulder, including the pectoralis minor and the biceps brachii.

What is the coracobrachialis muscle?

The coracobrachialis is a small muscle in the shoulder. This muscle may be small but it has a big role in the body. In this lesson you'll learn all about the coracobrachialis muscle, including its insertion, origin, and action!

What are the two actions of the arm?

The main actions produced by this muscle are flexion and adduction of the arm. Flexion refers to raising the arm to the front of the body (such as a boxer throwing an uppercut punch) and adduction refers to pulling the arm towards the mid-line of the body (such as a person swimming the butterfly stroke).

Which muscle stabilizes the top of the humerus?

Additionally, the coracobrachialis muscle functions to stabilize the top of the humerus while the arm is naturally hanging at the side.

Which muscle extends down the arm and attaches to the humerus?

From the coracoid process, the coracobrachialis muscle extends down the arm and attaches to the humerus, which is the long bone in the upper arm. This upper arm region of the body is known as the brachial region. Specifically, the coracobrachialis muscle inserts on the inner part of the humerus, about halfway down the bone.

What is the term for moving the arm up in front of the body?

Flexion: Moving the arm up in front of the body, such as when a boxer throws an uppercut punch at his opponent.

What does it mean to enroll in a course?

Enrolling in a course lets you earn progress by passing quizzes and exams.

Overview

The coracoid process (from Greek κόραξ, raven ) is a small hook-like structure on the lateral edge of the superior anterior portion of the scapula (hence: coracoid, or "like a raven's beak"). Pointing laterally forward, it, together with the acromion, serves to stabilize the shoulder joint. It is palpable in the deltopectoral groove between the deltoid and pectoralis major muscles.

Structure

Function

Clinical significance

Other animals

Additional images

External links