Cranial nerves essay

The body is "capable of almost everything, but it would not be possible, without the brain receiving information, and analyzing the information. Cranial nerves with sensory functions allow us to smell and see.

The 12 Cranial Nerves of the Human Body written by: In addition, these nerves allow us to feel pain, indicating when there is a serious problem that requires medical intervention. Their functions vary, but main functions include muscle control, helping the brain interpret the five senses, and controlling glands in the human body.

Each cranial nerve pair controls specific functions of the human body. The olfactory nerve is involved in the sense of smell. This nerve has access to the cerebral cortex, but does not pass through the thalamus like other cranial nerves.

The optic nerve is involved in the sense of sight. Responsible for vision, damage to this nerve can result in temporary or permanent blindness. Ophthalmologists use the location of visual disturbances to determine if damage to the optic nerve is present.

The oculomotor nerve controls pupil constriction and eye movement. This nerve allows us to move our eyes in response to stimuli and dilate or constrict our pupils in response to changing light conditions.

The trochlear nerve also plays a role in the movement of the eyes. This nerve is especially important for looking down and looking in toward a midline object. The trigeminal nerve plays a role in controlling the muscles needed for chewing.

The Autonomic Nervous System And The Cranial Nerves Essay Sample

This nerve also provides the senses of pain and touch for the head and face. The abducens nerve allows the eyes to move away from the midline of the face.

The facial nerve controls the muscles used in smiling, frowning, and other facial expressions. It also helps produce taste in two-thirds of the tongue and allows for the sensations of touch and pain from the ear. The vestibulocochlear nerve has separate acoustic and vestibular divisions. The acoustic portion of the nerve allows for proper hearing.

The vestibular division is essential for normal balance. The glossopharyngeal nerve allows for taste on the back portion of the tongue, provides the sensations of pain and touch from the tongue and tonsils, and participates in the control of muscles used during swallowing.

The vagus nerve plays an important role in the human body. It controls the sensory and motor functions of the heart and glands. It also participates in the process of digestion.

The spinal accessory nerve allows the trapezius muscle and sternocleidomastoid muscle to control the movements of the head. The hypoglossal nerve allows the tongue to move properly.Free Essay: Cranial Nerve Palsy: with an Emphasis on Sixth Cranial Nerve Palsy Cranial Nerve Palsy With an Emphasis on Sixth Cranial Nerve Palsy I.

Cranial Nerve Palsy Essay; Cranial Nerve Palsy Essay. Words Jun 10th What are Cranial Nerves? * Cranial nerves are nerves that come directly from the brain stem in contrast to spinal. Function: Mixed (Sensory & Motor) Foramen: Jugular Foramen ~Sensory: Taste and visceral sensation from tongue, throat, heart, esophagus, abdominal viscera, and intestine.

Cranial Nerves The brain and spinal cord (CNS) are connected to parts of the body by nerves and cell bodies called the peripheral nervous system. The PNS contains all of the nervous tissue outside the brain and spinal cord. The Autonomic Nervous System And The Cranial Nerves Essay Sample.

Description: Preferred language style: English (U.S.). I need 2 chapters.

One on the autonomic nervous system and the other on the cranial nerves. MLA format only. You must use at least one book for each and 1 journal for each; the others can be Internet sources.

VIII. Sixth Cranial Nerve Palsy: Costs of Services and Treatments * Computed Tomography (CT) of the head and neck with contrast for the diagnosis of sixth cranial nerve palsy range from $$ * Magnetic Resonance Imaging (MRI) of the head and neck range from $$, depending on the type of test being performed.

Cranial Nerves The human body is a unique and fascinating entity. There is not much notice taken of the features the human body is capable of. The brain is necessary to perform day-to-day actions, such as the ability to speak, and see amongst us.