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TermDefinition
spinal nerves Sensory nerves carry impulses from the periphery as well as motor nerves providing innervation for muscles
Sympathetic nervous system Prepares the body for intense physical activity in response to stress - increased heart rate - increased blood pressure - fight or flight - NOREPINEPHRINE
Parasympathetic nervous system Maintaining resting state - slow heart rate - increased saliva - increased activity of digestive tract - ACETYLCHOLINE
Epiglottis Soft tissue valve base of tongue covering the larynx allows air in and out of the lungs, preventing any food / liquid from entering the lungs
Alveoi Alveolus Air sack in the lungs, comes in contact with the capillaries of the blood stream * location that exchanges oxygen for carbon dioxide
Normal sequence of blood flow through the heart and lung Right atrium, right ventricle, pulmonary artery, lung, pulmonary vein, left atrium, left ventricle and aorta
CAC - cardioacceleratory Center Fibers of the sympathetic nervous system travel by fibers down the spinal cord to the SA node, - NOREPINEPHRINE - in the medula
CIC - cardioinhibitory Center Parasympathetic fibers that reach the heart by the vegus nerve. - ACETYLCHOLINE - in the medula
Bradycardia heart rate below 60 beats per minute
tachycardia Heart rate greater than 100 beats per minute
Cardiac output Determined by multiplying the stroke volume by (×) the cardiac cycle ( heart rate ) = cardiac output
Cardiac cycle Contraction eretria and ventricles with a short pause - usually 60 to 100 beats per minute
stroke volume Amount of blood pumped by the left ventricle in each beat usually 60ml
CNS central nervous system Overall control center of the body and consists of the brain and spinal cord
ANS autonomic nervous system Involuntary function regulates the internal organs
Core of the brain autonomic function relay station impulses pass on their way to or from the cerebral cortex
Cerebral cortex Paired cerebral hemispheres essential function of thought
Cerebellum Coordinating Center for both sensory receptors and as well as coordination of movement
PNS peripheral nervous system Nerves that carry impulses away from the central nervous system to various parts of the body, Impuls from the periphery back to the cns.
Cranial nerves Cranial nerves origin at the base of the brain Sensory nerves : • optic • olfactory • auditory • trigeminal
Brain stem control center for autonomic nervous system, consists of •midbrain •pons •medulla oblongata •reticular formation
Created by: Sage2619