ESS 345 HOMEWORK 4 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++

ESS 345 HOMEWORK 4 EXAM QUESTIONS AND

ANSWERS WITH COMPLETE SOLUTIONS GRADED A++


Which of these conditions has the highest chance of happening at altitude?

a. problem evaporating sweat

b. sunburn

c. uncomfortably high humidity

sunburn

During the early phase of altitude exposure, muscle oxygen exchange is

diminished due to

a. lower arterial PO2

b. higher venous PO2

c. increased hemoglobin saturation

d. enhanced muscle oxidative enzyme activity

lower arterial PO2

During acute altitude exposures, cardiac output increases due to

a. increased heart rate

b. increased stroke volume

c. increased end-diastolic volume

d. decreased end-systolic volume

increased heart rate

, Within hours of reaching altitude, red blood cell concentration increases due to

a. increased EPO secretion

b. increased red blood cell production

c. decreased plasma volume

d. decreased red blood cell destruction

increased EPO secretion

Which track athlete would most likely excel in competition in Denver, Colorado

(elevation 1,610 m)?

a. 1,500 m runner

b. 800 m runner

c. 10,000 m runner

d. 3,000 m runner

800m runner

The two (2) factors that account for an increase in the blood's oxygen-carrying

capacity during altitude exposure are

a. an initial decrease in plasma volume followed by a decrease in erythrocytes

and hemoglobin synthesis

b. an initial increase in plasma volume followed by a decrease in erythrocytes and

hemoglobin synthesis

c. an initial increase in plasma volume followed by an increase in erythrocytes

and hemoglobin synthesis

d. an initial decrease in plasma volume followed by an increase in erythrocytes

and hemoglobin synthesis