These cells are important in the secondary immune response:
1.memory cells.
2.activated T-lymphocytes.
3.natural Killer cells.
4.macrophages.
1
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The second heart sound is heard during which phase of the cardiac cycle?
A) isovolumetric relaxation B) isovolumetric contraction C) ventricular ejection D) ventricular filling
Sex steroids are potent growth stimulators and contribute to the pubertal growth spurt, but they ultimately stop further growth by closing the epiphyseal plates
a. True b. False Indicate whether the statement is true or false
LH is responsible for
a. reinitiating meiosis in the oocytes of developing follicles b. halting estrogen synthesis by the follicular cells c. triggering ovulation d. formation of the corpus luteum e. all of the above
A cortex is found on the surface of both the
A) cerebral hemispheres and pons. B) pons and cerebellum. C) cerebellum and medulla oblongata. D) cerebellum and cerebral hemispheres. E) pons and medullar oblongata.