A sickle-shaped vertical partition that divides the left and right cerebellar hemispheres is the
A. diaphragma sellae.
B. falx cerebelli.
C. tentorium cerebelli.
D. superior sagittal sinus.
E. falx cerebri.
B
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Which of the following exclusively describes stratified epithelia?
A) They always have a free surface exposed to some inner chamber or passageway. B) They consist of a single cell layer. C) They are avascular. D) They cover surfaces subjected to mechanical and chemical stress. E) None of the answers are correct.
____ leave the blood after circulating for only a day or two and become the large-tissue phagocytes known as macrophages
a. Neutrophils b. Eosinophils c. Basophils d. Lymphocytes e. Monocytes
The connective tissue which forms the articular surfaces of long bones is ____.
a) elastic cartilage b) synovial membrane c) hyaline cartilage d) fibrocartilage
Sildenafil (Viagra) prolongs erection by ________
A) stimulating production of cGMP B) activating nitric oxide (NO) production C) inactivating guanylate cyclase D) inhibiting nitric oxide (NO) production E) inhibiting degradation of cGMP