Neck nerves diagram
Your cranial nerves are pairs of nerves that connect your brain to different parts of your head, neck, and trunk. There are 12 of them, each named for their function or structure. Each nerve also The
external carotid artery helps supply part of the brain through its many branches, and it also gives blood to the thyroid gland in the neck.The thyroid gland is one of the largest endocrine The cervical ganglia are paravertebral ganglia of the sympathetic nervous system. Preganglionic nerves from the thoracic spinal cord enter into the cervical ganglions and synapse with its postganglionic fibers or nerves. The cervical ganglion has three paravertebral ganglia: . superior cervical ganglion (largest) - adjacent to C2 & C3; postganglionic axon projects to target: (heart,
head, neck The digestive system of the head and neck contains the structures responsible for the ingestion, chewing, swallowing, and initial digestion of food. The supraclavicular nerves (descending branches) arise from the third and fourth cervical nerves; they emerge beneath the posterior border of the sternocleidomastoideus (sternocleidomastoid muscle), and descend in the posterior triangle of the neck beneath the
platysma and deep cervical fascia The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Cancers that are known collectively as head and neck cancers usually begin in the squamous cells that line the moist, mucosal surfaces inside the head and neck (for … The human head weighs about a dozen pounds. But as the neck bends forward and down, the weight on the cervical spine begins to increase. At a 15-degree angle, this weight is about 27 pounds, at 30 Blood Vessels and Nerves of the Eye. The human eye is a highly evolved structure of our anatomy and has many coexisting and interdependent
elements. It is capable of moving and follow the objects along with accommodating to near and far; the eyes also can see in varying light, and in colour. The Cranial Sympathetics—The cranial sympathetics include sympathetic efferent fibers in the oculomotor, facial, glossopharyngeal and vagus nerves, as well as sympathetic afferent in the last three nerves. 4 The Sympathetic Efferent Fibers of the Oculomotor Nerve probably arise from cells in the anterior part of the oculomotor nucleus which is located in the tegmentum of the mid-brain.