1. The alimentary tube is around _____ meters long. A. 2 B. 4 C. 6 D. 9 2. The processes of chewing are referred to as ______ A. churning B. mastication C. peristalsis D. deglutition 3. How many teeth does an average adult have? A. 20 B. 32 C. 30 D. 52 4. The term wisdom tooth refers to the _____ toot ...continues
28. The outside layer of the heart a. fibrous pleura b. pericardium c. parietal pleura d. peritoneum 29. The superior vena cava enters the __________ of the heart. a. right ventricle b. right atrium c. left atrium d. left ventricle 30. The pulmonary semilunar valve prevents back flow of blood into the __ ...continues
28. The outside layer of the heart a. fibrous pleura b. pericardium c. parietal pleura d. peritoneum 29. The superior vena cava enters the __________ of the heart. a. right ventricle b. right atrium c. left atrium d. left ventricle 30. The pulmonary semilunar valve prevents back flow of blood into the __ ...continues
51. The structure of a lymphatic vessel is most similar to that of a(n) A. artery. B. arteriole. C. vein D. capillary. 52. The spleen A. is the largest lymphatic organ B. it filters the blood. C. it serves as a blood reservoir. D. all of the above 53. The spleen is much like a lymph node except that the ...continues
Which of the following statements is TRUE concerning muscle organization? a. Myosin filaments are attached to Z bands. b. Actin filaments are thin. c. Actin filaments border sarcomere. d. A muscle bundle is composed of tiny units called I Bands. _____ filament pulls itself down the _____ filament, causing the muscle to c ...continues
An immature egg (oocyte) is released from one (1) ____ of a pair. From each ovary, and (2) _____ forms a channel for transport of the immature egg to the (3) ______, a hollow, pear-shaped organ where the embryo grows and develops. The lower narrowed part of the uterus is the (4) _______. The uterus has a thick layer of smooth m ...continues
FSH and (1) _______ stimulate cells outside the zona pellucida to secrete (2) _____. A(n) estrogen-containing fluid accumulates in the follicle, and estrogen levels in the blood begin to increase. About eight to ten hours before being released from the ovary, the (3) _____ completes Meiosis I. And then its (4) _____ divides, for ...continues
The midcycle surge of LH that triggers ovulation also induces the formation of a (1) ____ _______ in the ovary. This yellowish, glandular structure forms by cell differentiation among (2) _________________ cells left behind in the follicle. Secretions from the (1) influence the rest of the cycle. The corpus luteum secretes (3 ...continues
Suppose the (1) ____ oocyte is on its way down an oviduct when a female and male are engaged in sexual intercourse, or (2) _____. The male sex act requires (3) _____________ and ejaculation. During coitus, pelvic thrusts stimulate the penis, the female's (4) ____________, and the vaginal wall. The mechanical stimulation induces ...continues
1. embryonic period A. extends from the seventh month until birth. 2. fetus B. extends from the start of the fourth month to the end of the sixth month. 3. fetal period C. the blastocyst adheres to the uterine lining and sends out projections that invade the mother's tissues. 4. first trimester D. the time span from the third ...continues
