Respiratory System 12, Regulation of respiration
March 31, 2019
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15:55Now PlayingRespiratory System 12, Regulation of respiration
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as posted by the channelA review of how oxygen lack stimulaes increased respiratory effort. Followed by consideratin of the control of the respiratory muscles by the cervical and thoracic nerves.
Please answer all of the following MCQs on Regulation of Respiration.
Regulation of respiration
The carotid bodies are located;
a. in the arch of the aorta
b. in the medulla oblongata
c. between the internal and external carotid arteries.
d. between the heart and the lungs
The chemoreceptors in the carotid bodies are most sensitive to;
a. increases in the levels of oxygen in the blood
b. decreases in the levels of oxygen in the blood
c. increases in systemic arterial blood pressure
d. decreases in systemic arterial blood pressure
Cranial nerve pair IX are the:
a. vagus nerves
b. oculomotor nerves
c. femoral nerves
d. glossopharyngeal nerves
The rhythmicity centre for ventilation is located in the;
a. pons
b. medulla oblongata
c. cerebral cortex
d. midbrain
Which nerves combine to form the phrenic nerve?
cervical spinal nerves 1, 2, and 3
cervical spinal nerves 3, 4, and 5
thoracic spinal nerves 1, 2, and 3
thoracic spinal nerves 3, 4, and 5
Increases in carbon dioxide in body fluids will result in;
an increase in pH number
a decrease in levels of carbonic acid
an increase in free hydrogen ions.
a decrease in free hydrogen ions
The primary respiratory area is found in the;
a. cerebrum
b. midbrain
c. pons
d. medulla oblongata *
Forced breathing out during exercise stimulates which group of muscles?
a. vastus lateralis
b. sternocleidomastoids
c. external intercostal muscles
d. internal intercostal muscles *
Which neurological structure inhibits further inhalation, thereby preventing overinflating of the lungs
a. medullary ventral area
b. medullary dorsal area
c. pneumotaxic area in the pons *
d. apneustic centre in the pons
Which neurological structure prolongs inhalation thereby promoting deeper breathing?
a. medullary ventral area
b. medullary dorsal area
c. pneumotaxic area in the pons
d. apneustic centre in the pons *
Increased impulses from the proprioceptors during running initially stimulate which neurological structure?
a. medullary ventral area
b. medullary dorsal area *
c. pneumotaxic area in the pons
d. apneustic centre in the pons
Carbon dioxide dissolved in water yields;
a. Sulphuric acid
b. Lactic acid
c. Hydrochloric acid
d. Carbonic acid. *
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