The anterior border of the perineum is the
A. anus.
B. urethra.
C. pubic symphysis.
D. scrotum in the male and the labia majora in the female.
C
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Extensions from megakaryocytes that extend through blood vessel walls in red marrow are sliced off from the cells by the force of blood flow. These extensions are
A. reticulocytes. B. promegakaryocytes. C. myeloid stem cells. D. late erythroblasts. E. proplatelets.
Which of the following would not present an foreign antigen within MHC-2 glycoproteins?
a. macrophage b. liver cell c. dendritic cell d. B cell e. Neither b nor d
Which of the following terms is mismatched with its description?
A. Chordae tendineae - connective tissue strings that connect to cusps of valves B. Pectinate muscles - muscles that close valves C. Trabeculae carneae - found on the interior walls of ventricles D. Endocardium - covers the inner surfaces of the heart E. Myocardium - cardiac muscle
Which of the following muscles has its insertion on the sternum?
A) internal oblique B) external intercostal C) rectus abdominis D) internal intercostal E) scalene