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a&p midterm
| Question | Answer |
|---|---|
| digestion occurred in tube #__ | 4 |
| chemical digestion lab tested which protein? | pepsin |
| biuret (________) + protein = _____________ ---digestion--> __________ | blue; purple; pink |
| ____ denatures proteins | HCl |
| tubes #___ and #___ were controls | 1 and 6 |
| stomach pH | 1.5 |
| the more acidic the ___________ it digests | better |
| zone of interface | where oil and H2O meets |
| tween is an | emulsifier |
| tween created a | layer of bubbles from allowing the oil and H2O to slightly mix |
| dry respirometer | instrument used to measure lung volumes |
| vital capacity (VC) | total exchangeable air VC = TV + IRV + ERV |
| tidal volume (TV) | amount of air in/exhaled in a normal breath |
| inspiratory reserve volume (IRV) | amount of air that can be forcibly taken into the lungs over the tidal volume |
| residual volume | amount of air that cannot be expelled |
| total lung capacity (TLC) | sum of all volumes |
| expiratory reserve volume | trying to empty your lungs after a normal exhale e |
| residual volume = | VC x age factor |
| age factors: 16-34, 35-49, 50-69 | 16-34: 0.250 35-49: 0.305 50-69: 0.445 |
| ____ prevents collapse of alveoli | residual air |
| emphysema --> | residual air increases as the alveoli cannot completely deflate |
| normal values for VC | males - 4800 mL females - 3100 mL |
| TV normals | 500 mL for males and females |
| ERN normals | males - 1200 mL females - 700 mL |
| IRV normals | males - 3300 females - 1900 |
| RV normals | 1200, 1100 |
| TLC normals | 6000, 4200 |
| in what situation can breath be held the longest and why | #2 - hyperventilation hyperventilation drops blood CO2 levels, allowing you to hold more O2 |
| respiratory center | brain stem - pons and medulla oblongata |
| auscultate | to listen |
| palpate | to feel |
| what heart sound is longer? | lub |
| lub | closing of the AV valves |
| lub is loudest at site #__ dub is loudest at site #__ | lub - 1 dub - 2 |
| average pulse rates | women: 60-70 men: 50-70 |
| why don't you use the thumb to palpate a pulse | thumb has its own pulse |
| why is carotid stronger than the radial | carotid is a large central artery close to the heart |
| sites where pulse can be easily palpated | radial , carotid, brachial, femoral, popliteal, dorsalis pedalis |
| systolic vs diastolic | contraction vs relaxation |
| pulse pressure | systolic - diastolic |
| atherosclerosis | elevates pulse pressure (hardening of arteries) |
| normal blood pressure | 130/80 to 110/60 |
| lying down to standing | increased blood pressure and pulse rate |
| what did lying down to standing affect more | pulse rate |
| why does blood pressure and pulse rate increase during exercise | increased body demands |
| _______________ affects blood pressure ________________ affects pulse rate | vasoconstriction affects blood pressure adrenaline affects pulse rate |
Created by:
kingsleya27