The upper respiratory tract extends from the nose through the ________.
A. pharynx
B. alveoli
C. trachea
D. larynx
E. lungs
Answer: D
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Hormones often cause a cell to elicit multiple responses; this is because ________.
A) there are thousands of receptors on the cell membrane B) the receptors bind to several hormones at the same time C) the protein kinases are rapidly metabolized D) during protein kinase activation, enzymes phosphorylate many other enzymes
Collectively, the community of microbes that coexist peacefully and usefully with their human host is called the microbiometa, and the aggregate collection of genomes is known as the microbiota
a. True b. False Indicate whether the statement is true or false
Stress of any kind causes the release of
a. aldosterone b. the major glucocorticoid c. insulin d. melatonin e. none of the above
A headache that is related to changes in cerebral blood flow is classified as a/an __________ headache.
A) tension B) sinus C) migraine D) intracranial