What does the subclavius nerve innervate?
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.
What is the blood supply to subclavius?
The subclavius muscle receives arterial blood from the clavicular branch of thoracoacromial artery, with contributions from the suprascapular artery.
What is subclavius muscle?
The subclavius muscle is a small triangular muscle of the pectoral region which depresses the shoulder.
Will the subclavius elevate or depress the clavicle?
The first rib elevates toward/against the clavicle. This often occurs in clients who have laboured breathing. Tight anterior and middle scalenes and subclavius can also cause this to occur. The clavicle depresses and the first rib elevates.
What does the Suprascapular nerve innervate?
The suprascapular nerve branches provide efferent innervation to the supraspinatus and infraspinatus muscles as well as sensory innervation to the shoulder joint.
What elevates the clavicle?
During elevation of the arm, trapezius action is responsible for raising the clavicle by approximately 30° about the sternoclavicular axis. When the coracoclavicular ligament is intact, this force is transmitted to the scapula; thereby initiating scapular rotation during elevation of the limb.
What are the two types of innervation?
Terms in this set (7)
- somatic nervous system. skeletal muscle and voluntary control of body movements.
- visceral nervous system. autonomic/ involuntary control of structures of the body cavities and some structures of the body wall.
- GVE. to smooth muscles and glands.
- GE. striated muscle (voluntary or involuntary)
- GA.
- VA.
- SA.
Where does the innervation of the subclavius muscle take place?
The brachial plexus and both the subclavian artery and vein pass under the subclavius muscle. Due to its location and relatively small size the muscle is hardly palpable. The innervation is carried by the subclavian nerve (C5-6), a branch of the brachial plexus.
Can a rounded back cause subclavius muscle pain?
Self-massage Most people do not know about the subclavius muscle, but it can be the source of pain in the area of the biceps, your inner forearm or the first three fingers. A rounded back or desk work can contribute to problems in this muscle. 1.
Is the subclavian nerve a nerve or a filament?
[edit on Wikidata] The subclavian nerve or nerve to the subclavius is a small filament, which arises from the point of junction of the fifth and sixth cervical nerves. This origin is known as Erb’s point.
Is the subclavius part of the clavicle?
The subclavius is enclosed by the clavipectoral fascia, which is a fibrous connective tissue that spans the interval between the clavicle and pectoralis minor muscle. The pectoralis major muscle courses superficial to the subclavius and clavipectoral fascia.