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Study Stack-7-13

TermDefinition
Local potentials 1. excitation-opening Na in decreases membrane potential 2. depolarization- MP moves to 0. 3. inhibition- K moves out increases MP mag. 4. hyperpolarization- MP away from 0.
action potentials 1. stimulus-Na in (local) 2. increase mag. voltage gated Na opens, -50- (-60)mV. in summation zone 3. Na in membarane to 0 V to peak at 30mV. 4. gates open for all or none 5. Peaks and moves back to RMP. (repolarixation)
Stimulus detection receptors 1. mechanoreceptors 2. chemoreceptors 3. thermoreceptors 4. nociceptors (pain/damage) 5. photoreceptors 6. osmoreceptors (hypothalmus) (7. nociceptors- free nerve endings, A: acute pain B: chronic pain)
Endocrine glands 1. pituitary (adenohypophysis/neurohypophysis) 2. pineal 3. thyroid 4. parathyroid 5. adrenals
Boyle's Law volume of a gas varies inversely with pressure at a constant temp. Increase in volume decreases pressure. decreased IPP = decrease alveolar and inverse on expiration.
pulmonary volumes 1. tidal volume-normal exhale (500mL @rest) 2. Expiratory reserve(ERV) forcible expiration (100-1200ml) 3. Inspiratory reserve (IRV) forcible inspiration (3300ml) 4. Residual (RV)- left after forcible expiration (1200ml)
Pumonary capacities 1. Vital capacity(VC)= IRV+TV+ERV (max in/out) 2. inspiratory capacity(IC)= max in after expiration TV+IRV 3. Fx residual cap. (FRC)= ERV+RV 4. Tot. Lung Capacity(TLC)= summ of all volumes
Medullary Rhythmic area 1. dorsal resp group-chemoreceptor integration for pCo2 2. Ventral (VRG)- basic rhythm
Dalton's law Partial pressures. pressure exerted by any one gas in a mix is relative to concentration of that gas and total pressure.
chloride shift bicarb out and chloride ions back into RBC's
Created by: mbolander
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