Exam 13: The Respiratory System

Indicate which type of hypoxia would be present in each of the circumstances listed below by writing the appropriate letter in the blank using the following answer code. a.anemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -Congestive heart failure

Inspiratory events occur because

_______ (Contraction or Relaxation?) of the diaphragm ______ (increases or decreases?) the volume of the thoracic cavity, which, in turn causes intra-alveolar pressure to increase.

Which of the following forces does not contribute to keeping the alveoli open?

Indicate which lung volume or capacity is being described in the column below by filling in the appropriate letter in the blank. a.vital capacity b.respiratory rate c.FEV1 d.tidal volume e.residual volume f.total lung capacity g.functional residual capacity h.alveolar ventilation i.pulmonary ventilation j.inspiratory reserve volume k.expiratory reserve volume l.inspiratory capacity m.anatomic dead space volume -The extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

$\mathrm { P } _ { \mathrm { O } _ { 2 } }$ in the blood is

The skeletal muscles for breathing are located in the walls of the lungs.

All of the following would result in lower oxygen saturation of hemoglobin except

Which statement is incorrect?

If the $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ alveolar is 100 mm Hg, the blood leaving the pulmonary capillaries in a normal person will have a $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ of

Indicate the effect the following changes would have on the rate of gas transfer using the following answer code. a.Increases the rate of gas transfer b.Decreases the rate of gas transfer c.Has no effect on the rate of gas transfer -Effect of increased metabolism of a cell on O₂ and CO₂ exchange between the cell and blood

Respiration is accomplished entirely by the respiratory system.

Identify the correct statement(s).

If 20% of the air is composed of O₂, the partial pressure of oxygen at sea level where atmospheric pressure is 760 mm Hg is

The respiratory center is located in the cerebral cortex.

The vital capacity is

The ____________________ effect refers to the reduced affinity of Hb for O₂ in the presence of increased CO₂ and H⁺.

At the end of inspiration and at the end of expiration, intrapleural pressure is always equal to atmospheric pressure.

The ____________________ nerve supplies the diaphragm.

Hemoglobin has the greatest affinity for