If the dorsal respiratory group of neurons in the medulla oblongata were destroyed bilaterally,
A) a person would stop breathing.
B) pulmonary ventilation would increase markedly.
C) the respiratory minute volume would increase.
D) tidal volumes would increase.
E) alveolar ventilation would increase.
Answer: A
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Vasoconstriction is associated with:
a. decreased sympathetic nervous system stimulation b. increased oxygen levels and myogenic activity c. increased carbon dioxide and nitric oxide levels d. decreased oxygen levels and myogenic activity e. decreased endothelin and nitric oxide levels
The membrane-bound "middleman" that acts as an intermediary between the receptor and adenylate cyclase in the cAMP second-messenger system is a(n) ____________________
Fill in the blank(s) with correct word
Which type of gland releases products by secretion into the blood?
A. Endocrine B. Merocrine C. Holocrine D. Exocrine E. Apocrine
The following is a list of the steps that occur in the production of an auditory sensation
1. The pressure wave distorts the basilar membrane on its way to the round window. 2. Movement of the tympanic membrane causes displacement of the malleus. 3. Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve. 4. Movement of the malleus causes movement of the incus and stapes. 5. Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane. 6. Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct. What is the proper sequence for these steps? A) 2, 4, 1, 6, 5, 3. B) 2, 4, 6, 3, 5, 1. C) 2, 1, 4, 6, 5, 3. D) 2, 4, 6, 1, 5, 3. E) 2, 5, 4, 6, 1, 3.