« previous next »

Author Question: Which of the following will occur during even strenuous exercise in a normal healthy individual? ... (Read 18 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 16, 2018
Which of the following will occur during even strenuous exercise in a normal healthy individual?
 
  a. Blood gases remain stable.
  b. The arterial PCO2 rises.
  c. The arterial pH falls.
  d. The arterial PO2 falls.

Question 2

Coexisting arterial hypoxemia, acidemia, and high PaCO2 (i.e., asphyxia) will have what effect on the peripheral chemoreceptors?
 
  a. There is a decreased drive to breathe.
  b. There is a maximally increased drive to breathe.
  c. There is insufficient information to make a determination.
  d. There is virtually no response.


bob

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
Strenuous exercise increases carbon dioxide production and O2 consumption by as much as 20-fold. Ventilation normally keeps pace with CO2 production, keeping PaCO2, PaO2, and arteri-al pH constant. Because arterial blood gases do not change, elevated carbon dioxide or hypoxia does not stimulate ventilation in healthy individuals during exertion.

Answer to Question 2

ANS: B
Coexisting arterial hypoxemia, acidemia, and high PaCO2 (i.e., asphyxia) maximally stimulate the peripheral chemoreceptors.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
Pericardial effusion: A, normal pericardial sac; B, pericardial sac with excess fluid possibly causi Pericardial effusion: A, normal pericardial sac; B, pericardial sac with excess fluid possibly causi
Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T
Healthy lunch Healthy lunch
Two normal frequency distributions with the same mean but different amounts of variation Two normal frequency distributions with the same mean but different amounts of variation
The karyotype of a triploid individual contains three copies of each chromosome. The karyotype of a triploid individual contains three copies of each chromosome.
Video: Introduction to Sleep Apnea

For a complete list of videos, visit our video library