Which Statement About How Breathing Is Regulated Is True

question 11

Multiple Choice

Which statement about how breathing is regulated is true?

• A) Mammals are quite sensitive to decreasing levels of O₂ in their arterial blood.
• B) The brainstem posterior to the medulla regulates breathing.
• C) Fishes are very sensitive to decreasing levels of O₂ in their arterial blood.
• D) In mammals, a small increase in arterial PCO₂ prompts no change in ventilation.
• E) Severing the spinal cord does not stop breathing in mammals.

---

Definitions:

Resignation Letter

A formal document or email communicated by an employee to an employer indicating the employee's intention to leave their job.

Résumé Follow-Up

The process of contacting a potential employer after submitting a résumé, to reiterate interest and inquire about the application status.

Interview Follow-Up

Communication sent by an applicant after a job interview, often to thank the interviewer and reiterate interest in the position.

Hazardous Waste

Substances that pose a risk or are hazardous to both human health and the ecological surroundings.