The pons and cerebellum arise from which secondary embryonic vesicle?
A. Diencephalon
B. Metencephalon
C. Myelencephalon
D. Mesencephalon
E. Telencephalon
Answer: B
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Collagen
a. provides tensile strength to the cytoskeleton b. is most abundant in tissues that stretch and then recoil c. forms the intercellular filaments of desmosomes d. is the most abundant protein in the ECM e. all of these
hyperthyroidism occurs when the thyroid gland secretes decreased amounts of thyroxine
a. true b. false
In contrast to negative-pressure ventilation, positive-pressure ventilation occurs when:
A) the diaphragm contracts. B) air is drawn into the lungs. C) intrathoracic pressure falls. D) air is forced into the lungs.
What structure is removed from the penis during circumcision?
A. Prepuce B. Corpora cavernosa C. Glans penis D. Root