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Mod 1
| Term | Definition |
|---|---|
| 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
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