Which is the origin of the subclavius?
The subclavius muscle originates by a strong tendon from the sternal end of the 1st rib, near its articulation with the costal cartilage. The tendon spreads superolaterally into a muscle belly that inserts into the lower surface of the middle third of the body of clavicle (groove for subclavius muscle).
Where is subclavian nerve located?
The subclavian nerve, also known as the nerve to the subclavius, is small branch of the upper trunk of the brachial plexus. It contains axons from C5 and C6. The subclavian nerve innervates the subclavius muscle.
Where is the subclavian groove?
clavicle
Anatomical Parts Subclavian groove (groove for subclavius) is an elongated groove on the inferior surface of clavicle which gives attachment to the Subclavius.
What artery supplies the subclavius?
clavicular artery
The clavicular artery provides blood to the subclavius muscle region. The deltoid artery provides blood to the deltoid region. The second branch of the second part of the axillary artery is the lateral thoracic artery.
What is the origin of Sternocleidomastoid?
Sternocleidomastoid Attachments It originates on the anterior surface of the manubrium, and the superior border and anterior surface of the medial third of the clavicle. The SCM converges into one point and inserts on the lateral surface of the mastoid process and the nuchal line of the occipital bone.
Which nerve is responsible for shoulder pain?
Your axillary nerve, also known as the circumflex nerve, is one of five peripheral nerves that run through your shoulder. Axillary nerves start in your neck at the brachial plexus (a network of nerves in your shoulder). This network of nerves enables movement and sensation to your upper limbs.
What does the subclavian nerve supply?
The subclavian nerve, also known as the nerve to subclavius, is an anterior branch from the C5 and C6 roots of the brachial plexus, and supplies the subclavius muscle.
What is a subclavian groove?
Definition of subclavian groove : either of two grooves for the passage of the subclavian artery and vein along the first rib.
What runs in subclavian groove?
in length, for the attachment of the costoclavicular ligament. The rest of this surface is occupied by a groove, which gives attachment to the Subclavius; the coracoclavicular fascia, which splits to enclose the muscle, is attached to the margins of the groove.
What nerve Innervates the subclavius?
the subclavian nerve
Arising from anterior divisions of C5-C6, also from the upper trunk, the subclavian nerve innervates the subclavius muscle.
What are the origins and insertions of the sternocleidomastoid?
Origin and insertion The sternal head originates from the manubrium sterni, while the clavicular head from the medial third of the clavicle. The insertion is the lateral surface of the mastoid process of the temporal bone and the lateral half of the superior nuchal line of the occipital bone.
Where is the origin and insertion of the sternocleidomastoid?
What is the origin and insertion of posterior deltoid?
The middle deltoid originates at the acromion of the scapula. The posterior deltoid originates at the spine of the scapula. All three parts of the deltoid insert at the deltoid tuberosity of the humerus.
What is origin deltoid muscle?
The deltoid muscle originates from the lateral part of the clavicle (collarbone), as well as the spine and acromion process of the scapula (shoulder blade). From these points of origin, the muscle then travels down the arm and inserts on the deltoid tuberosity of the humerus (long bone of the upper arm).
What are the symptoms of nerve damage in the shoulder?
Axillary nerve injury symptoms include:
- Shoulder or arm muscle weakness.
- Shoulder or arm muscle wasting.
- Numbness in your arm.
- Tingling in your arm.
- Loss of feeling in your arm or hand.
- Trouble lifting your arm.
- Limp hanging arm.
- Pain.
What nerve controls shoulder?
The axillary nerve’s
The axillary nerve’s primary purpose is to supply nerve function to the shoulder joint and three muscles in the arm, but it also innervates some skin in that region, as well.
What runs in the subclavian groove?
inferior surface: The subclavius muscle resides in the subclavian groove of the clavicle and functions to depress the shoulder as well as pull the clavicle anteroinferiorly. The coracoacromial ligament is located laterally and provides support from the coracoid residing below.