The phrenic and intercostal nerves are made up primarily of autonomic nerves for smooth muscle control.
Indicate whether this statement is true or false.
(
Question 2) Which type of receptor initiates the inhalation (or Hering-Breuer) reflex?
A. Central chemoreceptors
B. Baroreceptors
C. Peripheral chemoreceptors
D. Proprioceptors
(
Question 3) When central chemoreceptors detect a drop in the pH of the cerebrospinal fluid,
A. medullary respiratory centers trigger an increase in rate and depth of breathing.
B. medullary respiratory centers trigger a decrease in rate and depth of breathing.
C. pontine respiratory centers trigger a decrease in rate and depth of breathing.
D. the vagus and phrenic nerves stimulate decreased production of the catalyst carbonic anhydrase.
(
Question 4) Air flows out of the body during expiration because
A. intrapulmonary pressure is greater than atmospheric pressure.
B. intrapleural pressure is greater than intrapulmonary pressure.
C. atmospheric pressure is greater than intrapulmonary pressure.
D. intrapleural pressure is greater than atmospheric pressure.
(
Question 5) According to Boyle's law, the pressure of a gas _________ if the volume of its container increases.
A. increases
B. decreases
C. remains the same
(
Question 6) The involuntary, rhythmic activities that deliver and remove respiratory gases are regulated in the
A. brainstem.
B. midbrain.
C. cerebellum.
D. cerebral nuclei.
E. occipital lobe of the brain.
(
Question 7) At rest, a normal person breathes about _____ times per minute.
A. 8
B. 12
C. 26
D. 32
E. 50
(
Question 8) What is the name of the column of neurons within the medulla that initiates neural impulses for inspiration and expiration?
A. Pontine respiratory center
B. Ventral respiratory group
C. Dorsal respiratory group
D. Phrenic nucleus
(
Question 9) Histamine release results in increased airway resistance and decreased airflow.
Indicate whether this statement is true or false.
(
Question 10) Also known as the pneumotaxic center, this area allows for smooth transitions between inspiration and expiration.
A. Dorsal respiratory group
B. Ventral respiratory group
C. Pontine respiratory center
D. Medullary respiratory center
E. Carotid body
Quick Reply
