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Injury to Erb's point is commonly sustained at birth or from a fall onto the shoulder.The nerve roots normally involved are C5 and partly C6. Symptoms include paralysis of the biceps, brachialis, and coracobrachialis (through the musculocutaneous nerve); the brachioradialis (through the radial nerve); and the deltoid (through the axillary nerve).
The brachial plexus is a network of nerves (nerve plexus) formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit, it supplies afferent and efferent nerve fibers to the chest, shoulder, arm, forearm, and hand.
In humans, the right and left phrenic nerves are primarily supplied by the C4 spinal nerve, but there is also a contribution from the C3 and C5 spinal nerves. From its origin in the neck, the nerve travels downward into the chest to pass between the heart and lungs towards the diaphragm.
The superficial part of the cardiac plexus lies beneath the aortic arch, in front of the right pulmonary artery.It is formed by the superior cervical cardiac branch of the left sympathetic trunk and the inferior cardiac branch of the left vagus nerve. [1]
In anatomy, the left and right common carotid arteries (carotids) (English: / k ə ˈ r ɒ t ɪ d / [1] [2]) are arteries that supply the head and neck with oxygenated blood; they divide in the neck to form the external and internal carotid arteries. [3] [4]
It is located on the posterior wall of pelvic cavity (pelvis minor). Nervi of the plexus innervate the perineal region , buttocks and the lower limb . The largest nerve of the human body, the sciatic nerve , is the main branch that gives rami to the motor innervation of the muscles of the thigh , the leg , and the foot .
middle cervical ganglion (smallest) – adjacent to C6; target: heart, neck; inferior cervical ganglion. The inferior ganglion may be fused with the first thoracic ganglion to form a single structure, the stellate ganglion. – adjacent to C7; target: heart, lower neck, arm, posterior cranial arteries
The head rests on the top part of the vertebral column, with the skull joining at C1 (the first cervical vertebra known as the atlas). The skeletal section of the head and neck forms the top part of the axial skeleton and is made up of the skull, hyoid bone, auditory ossicles, and cervical spine. The skull can be further subdivided into: