The nerve branches to innervate: the striated muscles of the pharynx and larynx (except stylopharyngeus and tensor veli palatini ), smooth muscle and glands of the pharynx, larynx, thoracic and abdominal viscera, sensory from the thoracic and abdominal viscera, and sensory from the external ear, external auditory meatus and tympanic membrane. Glia are also essential to nervous system function, but they work mostly by supporting the neurons. In the neck the vagus lies between the internal jugular vein and the internal carotid artery, descending within the carotid sheath. Get the 3e of Essentials of Anatomy & Physiology by Kenneth Saladin. Neurons are the basic functional units of the nervous system, and they generate electrical signals called action potentials, which allow them to quickly transmit information over long distances. As it continues beyond its two sensory ganglia (jugular and nodosum) it is joined by fibers of the nucleus ambigus that have traveled briefly with the cranial root of XI. The autonomic nervous system is divided into the sympathetic nervous system and parasympathetic nervous system. That network - your nervous system - has two parts: Your brain and spinal cord make up your. These rootlets converge into roots that exit the skull through the jugular foramen. Fibers called nerves carry important messages back and forth between your body and your brain. The vagus nerve (CN X) emerges from the medulla as several rootlets.The nerve then exits the skull through the jugular foramen and gives off branches which supply motor fibers to the stylopharyngeus muscle, visceral motor input to the parotid gland, sensation from the carotid body and sinus, general sensory from the posterior one third of the tongue, pharyngeal mucosa, skin of the external ear and tympanic membrane, and taste from the posterior one third of the tongue. The 12 cranial nerves are olfactory (I), optic (II), oculomotor (III), trochlear (IV), trigeminal (V), abducens (VI. They control several important functions such as vision, smell, hearing, and facial movement. In the jugular fossa, the tympanic nerve is given off. The cranial nerves are a set of 12 nerves that originate in the brainstem and exit the skull through openings in the base of the skull. These rootlets converge to form the glossopharyngeal nerve. It is the most complete reference of human. The glossopharyngeal nerve (CN IX) emerges from the medulla as a series of rootlets between the olive and the inferior cerebellar peduncle. e-Anatomy delivers a high quality anatomy and imaging content atlas. Layer by layer, readers will study bones, ligaments, joints, and muscles as well as the nerves and blood vessels that supply these muscles that are essential.Succinct yet comprehensive format with quick and easy access facts in. Glossopharyngeal and Vagus Nerve Anatomy Review Anatomy of the brain and neurological pathways dealt with as key facts and summary tables essential to clinical practice. Essential Clinical Anatomy of the Nervous System is designed to combine the salient points of anatomy with typical pathologies affecting each of the major. Cranial Nerve I Olfactory Nerve Essential Anatomy
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