Which of the following statements concerning hemoglobin is correct?
a. the presence of hemoglobin keeps the blood PO2 low and favors O2 movement into the blood despite a very large transfer of O2 until hemoglobin is completely saturated.
b. hemoglobin can combine with O2, CO2, H+, and CO.
c. hemoglobin unloads more O2 in the presence of increased tissue acidity.
d. hemoglobin buffers against changes in pH due to respiratory carbonic acid.
e. all of these answers.
E
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Granulation tissue is
A. vascular connective tissue. B. avascular connective tissue. C. vascular epithelial tissue. D. avascular epithelial tissue.
Match the following:
A) Type I cells B) Type II cells C) Respiratory bronchioles D) Alveolar duct E) Segmental bronchi 1) No exchange of gases occurs here. 2) Secrete a fluid containing surfactant. 3) Where the respiratory zone of the lungs begins. 4) Composed of simple squamous epithelium. 5) Terminates in alveoli. 6) Composed of cuboidal cells. 7) The respiratory membrane is composed of fused basement membrane of the capillary walls and ________.
Deep white matter of the cerebrum is called
A) projection fibers. B) fissures. C) cerebral nuclei. D) the cerebral cortex. E) None of the answers are correct.
Which of the following effects on the body CANNOT be attributed to testosterone?
A. Rapid bone growth B. Increased calcium excretion C. Growth of pubic, axillary, and facial hair D. Hypertrophy of the larynx E. Enlargement of male genitalia