Term
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Definition
| relay messages from the brain to the muscle or gland cells. |
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Term
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Definition
| (which are found only in the CNS) connect the incoming sensory pathways with the outgoing motor pathways. |
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Term
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Definition
| detect sensations (such as touch and heat) |
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Term
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Definition
| Form myelin sheath in peripheral nervous system |
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Term
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Definition
| impulse seems to “leap” from node to node |
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Term
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Definition
| is when the nerve cell restores its electrical balance in preparation for a new stimulus. |
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Term
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Definition
| Resting potential is when the neuron is resting but has the potential to react. |
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Term
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Definition
| Depolarization occurs as the membrane becomes more positive. |
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Term
| Action potential /Nerve Impulse |
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Definition
| neuron has become active as it conducts an impulse along the axon. |
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Term
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Definition
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Term
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Definition
| cell bodies of the dorsal neurons clustered in a knot-like structure |
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Term
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Definition
| bundles of nerve fibers contained within a nerve. |
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Term
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Definition
| bundles of axons within the white matter that serve as routes of communication to and from the brain. |
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Term
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Definition
| nerve networks outside the spinal cord. |
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Term
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Definition
| covers the surface of the brain , and it consistes of unmyelinated fibers. |
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Term
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Definition
| contains tracts that relay sensory and motor impulses.(Auditory&Visual) |
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Term
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Definition
| convey signals to from different parts of the brain. |
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Term
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Definition
attaches the brain to the spinal cord
(sensory and motor signals)
Cardiac & Respiratory Centers |
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Term
RAS
Reticular Activating System |
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Definition
| one component of the reticular formation |
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Term
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Definition
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Term
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Definition
| houses the thalamus & hypothalamus |
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Term
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Definition
| allows us to pinpoint the location of pain. |
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Term
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Definition
| plans muscle movements to form words |
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Term
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Definition
| determine the movements required to perform a task |
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Term
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Definition
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Term
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Definition
| increases heart rate, stimulates sweat glands, and inhibits intestinal motility. |
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Term
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Definition
| Constriction of bronchial tubes |
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Term
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Definition
| extracellular matrix of blood |
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Term
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Definition
| oxygen-carrying component of red blood cells (RBCs) |
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Term
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Definition
| one of blood’s formed elements |
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Term
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Definition
| plasma with clotting proteins removed |
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Term
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Definition
| white blood cells change in altitude alone would not affect their rate of production |
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Term
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Definition
| ribbon like protein chain that helps form hemoglobin |
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Term
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Definition
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Term
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Definition
| inner ear structure contains the structures for hearing |
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Term
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Definition
| contains organs necessary for the sense of balance |
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Term
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Definition
| are crucial for balance and equilibrium |
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Term
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Definition
| (pinna) is the visible part of the external ear |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| contains the organ of Corti, the hearing sense organ |
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Term
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Definition
| outermost layer of the eye |
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Term
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Definition
| parts of the middle vascular layer |
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Term
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Definition
| part of the inner neural layer |
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Term
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Definition
| bending of light rays so they focus precisely on the retina |
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Term
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Definition
| lines up the visual axis of each eye |
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Term
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Definition
| occurs when the lens changes its curvature |
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Term
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Definition
| when the pupil narrows to restrict light entering the eye |
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Term
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Definition
| endocrine gland that has a role in the immune system |
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Term
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Definition
| sac surrounding the heart |
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Term
| Superior and Inferior Vena Cavae |
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Definition
| vessels supplies blood to the right atrium |
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Term
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Definition
| received blood from the left ventricle |
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Term
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Definition
| receives blood from the right ventricle |
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Term
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Definition
| transport blood from the lungs to the left atrium |
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Term
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Definition
| heart's primary pacemaker |
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Term
| Atrioventricular (AV) node |
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Definition
| Purkinje fibers can initiate impulses |
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Term
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Definition
| Purkinje fibers can initiate impulses |
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Term
| Sympathetic Nervous System |
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Definition
| alter the heart’s rate, but it does not act as a pacemaker. |
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