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-Nervous System 3 functions of the nervous governance: -Receives and relays information -Monitors and responds to inner(a) and external changes -Controls and coordinates all personify functions Sensory: become alert of stimuli: change in environment Integative: memory, emotions, conscience, decisions Response: muscular tissues, what did you do?

Neuron- ( touchwood mobile ph unity) mobile phones that stock messages throughout the nervous system Nerve impulse- electrical signals, coded method acting from nerve cubicle Sensory nerve cadre: nerve cell that carries impulses from the awareness electric organs to the brain and spinal cord motor nerve cell: neuron that carries impulses from the brain and spinal cord to muscles and glands Interneuron: cell that connects the motor and receptive neurons (only found in brain) Cell body- heart position of the neuron that contains the nucleus and much of the cytoplasm Dendrite- part of the neuron that is an source from the cell body of a neuron that carries impulses from the environment to the cell body Axon- long fiber that carries impulses outside from the cell body of a neuron Axon terminals- gloomy swellings in a neuron at the end of an axon that makes connections with next neuron Myelin- signification composed of liplids and protein that forms an insulated sheath round an axon, and makes a go against impulse Neurilemma- outermost covering of a neuron allows nerve to grow back Threshold stimulus- lower limit level of a stimulus required activating a neuron Receptor- excess sensory neuron in a sense organ that receives stimuli from external environment ( nose, essences, ears) Effector- muscle of g! land that brings about a coordinated response to a stimuli Synapse- evidence of contact at witch an impulse is passed from one cell to some other Neurotransmitters- substance used by one neuron to signal another -Eye Sclera- white part of the bosom that helps maintain the shape and provides muscle that moves the eye Choroid- pigmented, contains blood vessels of eye, and becomes the disk-like twist called the iris Iris- part of the eye that gives it its color Pupil- in the middle... If you demand to get a entire essay, order it on our website: BestEssayCheap.com

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