Often asked: Anatomy What Is Clavius?

What is the function of Subclavius muscle?

It depresses the lateral clavicle, acts to stabilize the clavicle while the shoulder moves the arm. It also raises the first rib while lowering the clavicle during breathing. The subclavius protects the underlying brachial plexus and subclavian vessels from a broken clavicle – the most frequently broken long bone.

Where is the clivus in the brain?

The clivus is located at the midline, in the deepest part of the skull base. It constitutes the inclined anteroinferior surface of the posterior cranial fossa and extends from the dorsum sellae to the foramen magnum (Fig.

How did the Subclavius muscle get its name?

The subclavius muscle originates from the first rib. Specifically, this muscle begins in the area between the bone and the cartilage of the first rib. From this location, the subclavius muscle travels outward and inserts at the bottom surface of the middle part of the clavicle.

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What is the name of the United two vertebral arteries of the clivus of the skull?

Just lateral to the clivus bilaterally is the foramen lacerum (the internal carotid artery reaches the middle cranial fossa above the foramen lacerum), proximal to its anastomosis with the Circle of Willis. Posterior to the clivus is the basilar artery.

Why does my Subclavius muscle hurt?

Various activities can cause pain in the muscle. Lifting a heavy object can cause a great deal of pain in this muscle. For those who work with their arms outstretched such as on a computer or driving, it could end up causing pain in the Subclavius muscle.

How do you train the Subclavius?

Directions: With your thumb, apply a vertical and posterior force directly under the collar bone (clavicle). Move the thumb slowly on this muscle, across the entire clavicle. If tender, move slower, sometimes stopping on extremely tender areas. Perform this exercise for 2 – 3 minutes.

Can you survive chordoma?

Chordomas are malignant and potentially life threatening tumors. Currently the median survival in the United States is about 7 years. The overall survival rates are 68% at 5 years and 40% at 10 years. Complete surgical resection offers the best chance for long-term survival.

What are the symptoms of chordoma?

These symptoms can include tingling, numbness, weakness, lack of bladder or bowel control, sexual dysfunction, vision problems, endocrine problems and swallowing difficulties. If the chordoma has grown very large, you may be able to feel a lump.

What is clivus anatomy?

The clivus (of Blumenbach) is the sloping midline surface of the skull base anterior to the foramen magnum and posterior to the dorsum sellae 1. Specifically, it is formed by the sphenoid body and the basiocciput, which join at the spheno-occipital synchondrosis.

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Is the tongue’s own muscle?

The tongue is made mainly of skeletal muscle.

What is the Clavipectoral fascia?

The clavipectoral fascia is a sheet of loose connective tissue which is the deep layer of fascia in the pectoral region. It acts to suspend the floor of the axilla.

What joint does the Subclavius cross?

The main function of the subclavius is to stabilize the clavicle during movements of the shoulder girdle. Subclavius muscle.

Origin Costal cartilage, sternal end of rib 1
Function Sternoclavicular joint: Anchors and depresses clavicle

What happens if the vertebral artery is blocked?

If the resulting loss of brain function is permanent, it’ s called a stroke (an infarction or brain attack). A stroke can either be caused by blockage in the vertebral or basilar artery or the breaking off of a piece of plaque (embolus) that travels downstream and blocks a portion of the blood flow to the brain.

Is vertebral artery occlusion a stroke?

Death or major disability is the result of occlusion of large vessels in the vertebrobasilar system. However, many lesions arise in smaller vessels with a wide variety of focal neurological deficits. Stroke scoring systems to evaluate patients have been developed but are of limited use for vertebrobasilar stroke.

How do you perform a vertebral artery test?


  1. Place patient in supine and perform a passive extension and side flexion of the head and neck.
  2. Perform passive rotation of the neck to the same side and hold for approximately 30 seconds.
  3. Repeat test with head movement to the opposite side.

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