Martin Chapter 53 Control Of Breathing Test Bank - Laboratory Manual Anatomy & Physiology Cat 4e Test Bank by Terry Martin. DOCX document preview.
Lab Manual for Human Anatomy and Physiology, 4e (Martin)
Chapter 53 Control of Breathing
1) Which major region of the central nervous system contains the respiratory centers?
A) spinal cord
B) Cerebrum
C) Diencephalon
D) Cerebellum
E) Brainstem
2) During normal, quiet breathing, inspirations last longer than expirations.
3) Which of the following structures does not send input to the dorsal respiratory group?
A) Central chemoreceptors
B) Stretch receptors
C) Peripheral chemoreceptors
D) Irritant receptors
E) All of these structures send input to the dorsal respiratory group.
4) The most significant factor in determining changes in the rate and depth of breathing is the blood concentration of oxygen.
5) The central chemoreceptors for respiration are located in the ________; they monitor the blood concentration(s) of ________.
A) pons; oxygen
B) medulla oblongata; carbon dioxide and hydrogen ions
C) aortic and carotid arteries; oxygen
D) pons; carbon dioxide and hydrogen ions
E) medulla oblongata; oxygen
6) What is the result of the inflation reflex?
A) An increase in the duration of inspirations
B) An increase in the duration of expirations
C) A decrease in the duration of inspirations
D) A decrease in the duration of expirations
E) An increase in the duration of inspirations and a decrease in the duration of expirations
7) What type(s) of muscle tissue make(s) up the muscles of inspiration and expiration?
A) Both consist of skeletal muscle.
B) Inspiratory muscles consist of skeletal muscle, and expiratory muscles consist of smooth muscle.
C) Inspiratory muscles consist of smooth muscle, and expiratory muscles consist of skeletal muscle.
D) Both consist of smooth muscle.
E) Inspiratory muscles consist of skeletal muscle, and expiratory muscles consist of cardiac muscle.
8) During normal, quiet breathing, the expiratory muscles are only minimally involved in the process of respiration.
9) Which of the following is not true of the respiratory irritant receptors?
A) Stimulation of these receptors can lead to coughing or sneezing.
B) Stimulation of the respiratory irritant receptors results in dilations in the bronchial tree.
C) Sensory impulses from the irritant receptors are transported by the vagus nerve.
D) Sensory impulses from the irritant receptors are transported to the dorsal respiratory group.
E) All of these are true of the respiratory irritant receptors.
10) The main generator of impulses for respiratory rate during eupnea is the
A) dorsal respiratory group (DRG),
B) pneumotaxic center.
C) ventral respiratory group (VRG).
D) pontine respiratory group (PRG).
E) hypothalamus.
11) Muscles of inspiration include all of the following except the
A) external obliques.
B) pectoralis minor.
C) scalenes.
D) external intercostals.
E) All of these are muscles of inspiration.
12) Which of the following would not result in acidosis?
A) Rebreathing air from a paper bag
B) Hypoventilation
C) Breath holding
D) Hyperventilation
E) All of these could result in acidosis.
13) Which of the following is not true of respiratory alkalosis?
A) It exists when the blood pH is >7.45.
B) It can result from an increase in the CO2 level in the blood.
C) It can result in death, if the blood pH reaches 8.0 or above.
D) It causes vasoconstriction of the cerebral blood vessels, which decreases oxygen delivery to the brain.
E) All of these are true of respiratory alkalosis.
14) Which of the following substances binds to hydrogen ions, to alleviate respiratory acidosis?
A) Bicarbonate ions
B) Carbonic acid
C) Sodium bicarbonate
D) Water
E) Carbon dioxide
15) The ventral respiratory group sends impulses through an integrating center in the spinal cord, and then to the intercostal nerves, which stimulate contraction of the diaphragm.
16) Which of the following is not detected by the peripheral chemoreceptors?
A) An increase in the level of carbon dioxide in the blood
B) A decrease in the level of oxygen in the blood
C) An increase in the level of hydrogen ions in the blood
D) An increase in the level of sodium ions in the blood
E) The peripheral chemoreceptors detect all of these changes.
17) During inspiration, the expiratory neurons of the ventral respiratory group (VRG) are being inhibited.
18) The calcium hydroxide experiment demonstrates that
A) there is a much lower concentration of O2 in expired air than in atmospheric air.
B) there is a much higher concentration of CO2 in expired air than in atmospheric air.
C) there is a much higher concentration of O2 in expired air than in atmospheric air.
D) there is a much lower concentration of CO2 in expired air than in atmospheric air.
E) the concentrations of CO2 in expired air and atmospheric air are approximately equal.
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Laboratory Manual Anatomy & Physiology Cat 4e Test Bank
By Terry Martin