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Nervous System
Vocabulary words
| Question | Answer |
|---|---|
| The portion of a nerve cell that contains the nucleus but does not incorporate the dendrites or axon. Also called soma. | Cellbody |
| A single, long, relatively unbranched process projecting from a cell body of a neurone, which transmits nerve impulses away from the cell body. | Axon |
| A branched protoplasmic extension of a nerve cell that conducts impulses from adjacent cells inward toward the cell body. | Dendrites |
| The insulating envelope of myelin that surrounds the core of a nerve fiber or axon and facilitates the transmission of nerve impulses. | Myelin sheath |
| The junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell. | Synapse |
| A neuron that conveys impulses from the central nervous system to a muscle, gland, or other effector tissue. | Motor neuron |
| nerves that receive sensory stimuli, such as how something feels and if it is painful, smooth, rough, etc. | Sensory neuron |
| A wave of physical and chemical excitation along a nerve fiber in response to a stimulus, accompanied by a transient change in electric potential in the membrane of the fiber. | Nerve impulse |
| Either of the two symmetrical halves of the cerebrum, as divided by the longitudinal cerebral fissure. | Cerebral hemisphere |
| The large rounded structure of the brain occupying most of the cranial cavity. It controls and integrates motor, sensory, and higher mental functions, such as thought, reason, emotion, and memory. | Cerebrum |
| •The portion of the brain in the back of the head between the cerebrum and the brain stem.controls balance for walking and standing, and other complex motor functions. | Cerebellum |
| The portion of the brain comprising the medulla oblongata, pons, and mesencephalon. It performs motor, sensory, and reflex functions. | Brainstem |
| A large ovoid mass of gray matter situated in the posterior part of the forebrain that relays sensory impulses to the cerebral cortex. | Thalamus |
| The arched bridge of nervous tissue that connects the two cerebral hemispheres, allowing communication between the right and left sides of the brain. | Corpus callosum |
| a structure in the brain that plays a major role in learning and memory and is involved in converting short-term to long-term memory | Hippocampus |
| is a set of structures containing cerebrospinal fluid in the brain. It is continuous with the central canal of the spinal cord. | Ventricles |
| The three membranes that cover the brain and spinal cord | Meninges |
| The thick, whitish cord of nerve tissue that extends from the medulla oblongata down through the spinal column and from which the spinal nerves branch off to various parts of the body. | Spinalcord |
| The serumlike fluid that circulates through the ventricles of the brain, the cavity of the spinal cord, and the subarachnoid space, functioning in shock absorption. | Cerebro spinal fluid |
Created by:
jordangonzalez
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