KINE 433: Exam 1 Questions with Verified Answers

KINE 433: Exam 1 Questions with Verified
Answers
During exercise, expiration is an ______ process Ans✓✓ -Active


Equation for volume of gas Ans✓✓ -Vgas = surface area/thickness • D • (P1-P2)


What two characteristics of the lungs can change during exercise Ans✓✓ -Vital
capacity and tidal volume


Equation for pulmonary ventilation Ans✓✓ -Ventilation (L/min) = tidal volume
(L/min) • breathing frequency (br/min)


equation for alveolar ventilation Ans✓✓ -Va = (tidal volume - Anatomical dead
space) • breathing frequency


What is the most important factor for determining gas exchange Ans✓✓ -Partial
pressure gradient


Alveolar PO2 and PCO2 = Ans✓✓ -PO2 = 105 mmHg
PCO2 = 40 mmHg


Pulmonary artery PO2 and PCO2= Ans✓✓ -PO2 = 40 mmHg
PCO2 = 46 mmHg


__-__ mmHg PO2 gradient permits diffusion

, ____ mmHg PCO2 gradient permits diffusion Ans✓✓ -PO2 = 60-65
PCO2 = 6 mmHg


Alveolar PCO2 = Ans✓✓ -40 mmHg


What 3 ways is CO2 carried in blood Ans✓✓ -1. As bicarbonate ions
2. Dissolved in plasma
3. Bound to Hb (carbaminohemoglobin)


What is myoglobin? Ans✓✓ -A protein in muscles that transports oxygen


How does CO2 exit cells Ans✓✓ -Simple diffusion


What is the biggest factor for respiration Ans✓✓ -CO2


Respiratory centers/chemoreceptors are located - Ans✓✓ -In the brain stem
(medulla oblongata and pons)


Peripheral chemoreceptors are located - Ans✓✓ -In aortic bodies and carotid
bodies


Mechanoreceptors are located - Ans✓✓ -In pleurae, bronchioles, and alveoli


Dyspnea is caused by - Ans✓✓ -(Shortness of breath)