The layer of the uterine wall that is shed during menstruation is the A. perimet

Question

The layer of the uterine wall that is shed during menstruation is the A. perimetrium. B.s myometrium. C. hymen. D. endometrium. E. vasometrium. Which of the following is a function of the vagina? A. cocyte production B. reception of penis during intercourse C. site of fertilization D. production of estrogen E. female hormone secretion The lining of a capillary is called the A. endothelium. B. adventitia. C. pericapillary layer. D. thoroughfare layer. The exchange of nutrients and gases between the blood and tissue cells is the primary function of A. veins. B. arteries. C. arterioles. D capillaries. E. venules. Arteries can constrict or dilate as needed because of the smooth muscle found in the A. tunica intima. B. tunica media. C. tunica adventitia. D. tunica externa. E. tunica interna.

Explanation / Answer

96. The layer of the uterine wall that is shed during menstruation is the endometrium. Endometrium lines the inner wall of the uterus. A gradual thickening of this layer occurs in response to the menstrual cycle and when menstruation begins, the functional surface layer of the endometrium breaks down and peels off causing menstrual bleeding. So, the correct option is option D, endometrium.

97. It is a muscular and tubular part of the female genital tract and its function is to receive the male genital organ during the intercourse. Baby passage also occurs through it during childbirth. It is also a conduit for flow of menstrual blood. So, the correct option is option B.

98. Lining of a capillary is called as the endothelium. Endothelium is a type of epithelium that is made up of simple squamous cells known as the endothelial cells. Endothelium functions as a semi-selective barrier between the blood vessel lumen and the surrounding tissue. So, the correct option is option A, endothelium.

99. The exchange of nutrients and gases between the blood and tissue cells is the primary function of capillaries. Capillaries are small blood vessels that are branched out from the arterioles. They form a network around the cells of the body and through these capillaries nutrients and gases diffuse from blood into the tissues. So, the correct option is option D, capillaries.

100. Arteries constrict or dilate as needed because of the smooth muscle found in the tunica media. Tunica media is principally made up of smooth muscle cells and elastic tissue. The smooth muscle found in the tunica media of arteries is more compared to veins. This facilitates the arteries to constrict and dilate according to the blood volume needed by the tissues they feed. So, the correct option is option B, tunica media.

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