Efferent neurons Essays

tumors, malformations and disease. Cranial nerves possess either afferent or efferent nerve fibers or both. Afferent neurons convey information to the sensory stimulus in the brain while efferent neurons convey information to muscle

Neurons are nerve cells that do all the communicating within the body by transmitting electrochemical signals. A long process called Axons go from the cell body to send the signals to the other neurons or other cells in the body. There are three basic nervous that work with the nervous system the afferent (sensory neurons), the efferent (motor neurons) and the interneurons. The afferent neurons send sensory signals to the CNS from the receptors of the body. Efferent neurons send signals

sublingual salivary glands. Parts of facial nerve: The facial nerve consists of two parts: the facial nerve proper and the nervus intermedius. The facial nerve proper is the motor root of the facial nerve consisting of the axons of SVE (branchiomotor) neurons whose cell bodies reside in the facial nucleus. This nucleus contains subnuclei, each supplying specific muscles or groups of muscles. The nervus intermedius is sometimes referred to as the “sensory root,” which is a misnomer since in

body except skull and spine. The somatic nervous system has two kinds of nerves; afferent nerves that carry sensory signals from the external parts of the body to center, and efferent nerves which carry motor signals from central nervous system to muscular system. The autonomic nervous system also has afferent and efferent nerves and afferent nerves carry sensory signals from internal organs

fasciculations of a normal tongue. Signs of lower motor neuron damage are a shrunken side on the same side as the lesion, this may cause spontaneous contractions of the tongue. Then the clinician will request the client to stick their tongue out to make sure it is in midline and their lip musculature is strong. There are other tests such as moving the tongue from side to side, elevating the tongue, and producing sounds in isolation. Signs of upper motor neuron damage would be tongue deviating to the opposite

Voltage gated channels open and close in response to an electrical voltage, so they are affected by changes in electrical change around them. When a neuron is “at rest” a charge difference is maintained between the inside and the outside of the cell. This charge difference is produced and maintained largely by active transport using sodium-potassium pumps. The pumps send ions out of the cells and bring

react accordingly. The neuron is the fundamental unit of the nervous system. The nervous system is made up completely of neurons. These neurons act like electrical wires and allow the nervous system to transmit messages throughout the body extremely quickly through nerve impulses. The neuron has three main components: the cell body, the dendrites and the axon. The cell body contains the nucleus but not the dendrites or axons. The dendrite is an extension of the neuron transmitting impulses to

Nick Rosen Leland Fulton Biology April 18 2017 Bill Nye the Nervous Guy! Hey guys! Im Bill, and I am going to talk to you about the nervous system! Let's get right into it! The nervous system is the system of your body that coordinates actions and transmits signals to all parts of your body. Without the nervous system, we wouldn't feel pain. Your nerve cords are reaction to actions, while transmitting signals that is telling your body that you are in pain. Vertebrates are made up of two main parts

Cerebellum is a complex structure of neurons located at the base of structure in the posterior fossa. It lies back to the occipital lobe of the brain and dorsal to the brainstem, at the level of the pons and the medulla. The cerebellum is separated from the brain stem by the fourth ventricle. It is also connected to the brainstem by three branches: 1. superior cerebellar branch 2. medial cerebellar branch 3. inferior cerebellar branch Cerebellum functions as the motor brain and it is important for

OCCIPITAL LOBE: The occipital lobe encompasses the posterior portion of the human cerebral cortex and is primarily responsible for vision. The surface area of the human occipital lobe is approximately 12% of the total surface area of the neocortex of the brain. Direct electrical stimulation of the occipital lobe produces visual sensations. Any damage to the occipital lobe results in complete or partial blindness or visual agnosia depending on the location and severity of the damage. Vision begins

EAR The human auditory system is one of the most intricate, miraculous, and an ingenious creation designed to transfer sound waves from environment to brain in a most efficient and precise manner. The ear can be described as both an analytic microphone and a microcomputer, sending sound impulses to the brain. Ear is capable of turning the tiniest disturbances to a form that brain can understand and doing so instantaneously, over an enormous range of pitch and loudness. Being extremely complicated

An organ bath experiment was conducted to investigate the effect of agonist, histamine on guinea pig ileum (GPI) and how the antagonists, mepyramine and SIPBSDrug A affect the GPI’s response (smooth muscle contractions). A GPI simulation was conducted to compare the potencies and nature of antagonists against histamine. The control Rmax and EC50 of histamine without antagonist were 16.49gms and 2.093 x 10-7M respectively. The concentration-response curves were shifted to right parallelly and EC50

The hair whitens and becomes thin. b) There is loss of height due to thinning of spinal cartilage and stooped posture. c) There is elasticity of the skin due to loss of collagen. In the internal changes, a) The brain shrinks by 1/3rd and loses neurons and there is decreased blood, O2, glucose

NAME: Cassianna Sookram ID#: 812003173 DATE: 20.04.2016 CASE REPORT: Retinitis Pigmentosa (Pathology 2) ABSTRACT This case looks at the clinical findings, causes, signs, symptoms, diagnostic tests and management options of a patient with retinitis pigmentosa. Keywords: Retinitis Pigmentosa INTRODUCTION Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment due to the progressive degeneration of the rod photoreceptor cells in the retina. It may

Types of Human Memory Human is very complex being who has superior intelligence, the ability to articulate speech and has emotions. These incredible abilities come from the human brain which makes human more special and different from animals or any other creatures in this world. The brain controls and is responsible for human’s thoughts, body movement and feelings, as well as the memory. Human memory is the processes which involve in retaining; retrieving and using information about stimuli, images

Quotes about the human brain: “The human brain is a funny thing: it's very susceptible to tempo and melody. You put the right words to it, and it becomes very influential.” -Ray Stevens “The human brain has 100 billion neurons, each neuron connected to 10 thousand other neurons. Sitting on your shoulders is the most complicated object in the known universe.” -Michio Kaku How to deal with memory loss If you noticed your memory is no longer as sharp as it used to be, here are some tips to help you

10.1 STROKE This concept was taken from module 10 “Assessment of nervous system”, Sub-topic 3 “common abnormalities and assessment findings of nervous system”. Stroke is a condition of both the nervous and cardio-vascular system. Stroke is a condition of brain damage which results due to shortage of blood supply. The blood supply to the arteries of the brain is reduced leading to brain damage. This result from shortage of blood supply and glucose supply to the brain. In the US it is the fourth

Introduction to Functional Anatomy and Exercise Physiology lab Report Name Institution Introduction The human body is made up of interconnected systems that work together to produce different body functions. The systems are interdependent of each other hence playing a significant role in every single body function achieved. The human body systems are categorized into three primary divisions; physiology, anatomy, and neurology, based on their functions. Sports and exercises play a significant role

Essay 89: Pituitary Gland Function The pituitary gland is a pea sized region of specialized endocrine cells and neurons located behind the optic chiasm and enclosed in a bony structure called the sella turcica, or Turkish saddle. Although the pituitary is often called the “master gland” of the endocrine system, that label is more appropriate for an adjacent area of brain known as the hypothalamus. As 19th century scientists deciphered the anatomy and physiology of the central nervous system

Introduction PIVD stands for prolapsed intervertebral disc. It occurs due to the outgrowth of the disc. This outgrowth is the nucleus pulposus that seeps through a shred in the annulus fibrosus. It is also called slipped or herniated disc. It occurs in four stages: 1. Bulging: initially, when the disc cannot get back to its original state, after being stretched and retains a tin bump at one end of the disc. 2. Protrusion: post bulging, the bump becomes very prominent and the substance starts to