The function of the bulbourethral glands is to produce some seminal fluid and to lubricate the end of the penis during intercourse.
Answer the following statement true (T) or false (F)
True
Rationale: See the subsection “Bulbourethral/Cowper’s Glands” in the section “Male Reproductive Organs.”
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Antibody-mediated responses are most effective when the B cell and pathogen are in the same tissue and have physical contact with each other.
Answer the following statement true (T) or false (F)
What happens when troponin and tropomyosin block the active sites of actin?
A) The muscle produces a weak contraction. B) The muscle contraction reaches peak tension. C) The muscle contraction increases tension. D) The muscle relaxes.
When central chemoreceptors detect a drop in the pH of the cerebrospinal fluid,
A. the vagus and phrenic nerves stimulate decreased production of the catalyst carbonic anhydrase. B. pontine respiratory centers trigger a decrease in rate and depth of breathing. C. medullary respiratory centers trigger a decrease in rate and depth of breathing. D. medullary respiratory centers trigger an increase in rate and depth of breathing.
Hemoglobin can carry both oxygen and carbon dioxide in the blood.
Indicate whether the statement is true or false.