ypo-cells. ) hypothalamus. C)Leydig cells. D) anterior pituitary gland. E) serto
ID: 3165038 • Letter: Y
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ypo-cells. ) hypothalamus. C)Leydig cells. D) anterior pituitary gland. E) sertoli cells. 9) Prostate specific antigen (PSA) level is used to test for A) cancer in the epidiymus. B) prostate cancer. C) signaling for generation of semen in the prostate. D) signaling for generation of mucous in the prostate. E) signaling for generation of mucous by Leydig cells. 10) Based on what u know, the surgical removal of the seminal vesicles would likely A) cause sterility because PSA would not be produced. B) increase sterility because sperm would not be able to exit the body. C) likely reduce the volume of semen D) enhance the fertilization potency of sperm in the uterus. E) cause the testes to migrate back into the abdominal cavity. 11) The primary difference between estrous and menstrual cycles is that A) the endometrium shed by the uterus during the estrous cycle is reabsorbed but the shed endometrium is excreted from the body during the menstrual cycle. B) behavioral changes during estrous cycles are much less apparent than those of menstrual cycles. C) season and climate have less pronounced effects on estrous cycle than they do on menstrual cycles. D) copulation normally occurs across the estrous cycle, whereas in menstrual cycles copulation only occurs during the period surrounding ovulation. E) most estrous cycle are of much longer duration compared to menstrual cycles. 12. Which is not associated with uterine cycle? A) menstrual B) secretory C) spermatogenesis D) estrogen and progesterone 13) Ovulation is the follicular response to a burst of secretion of (choose the best answer) A) Luterizing hormone. B) progesterone. C) inhibin. D) prolactin. E) estradiol. 14) The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is A) LH. B) FSH. C) Inhibin. D) GnRH. E) estradiol. 15) Menopause is caused by A) reduced synthesis of ovarian steroids/ hormones. B) a decline in production of the gonadotropin hormones by the adrenal gland. C) menstrual cycle of the uterine endometrium. D) an increase in the blood supply to the ovaries. 16) Fertilization of human eggs usually takes place in theExplanation / Answer
9. Prostate-specific antigen (PSA) is produced by cells of the prostate gland. PSA is secreted in semen and a small amount if found in blood. PSA expression is observed in both normal cells and cancer cells. Normal levels of PSA in blood is less than 4 ng/mL. In prostrate cancer, the level rise above 4 ng/ml.
Right option is B. prostrate cancer.
10. Seminal vesicles are accessory glands located within the pelvis that secrete semen or seminal fluid. Sperm are bathed in seminal fluid that provides fructose. Fructose provides the energy to the sperm for motility. Semen also has citric acid, inorganic phosphorus, prostaglandins, and potassium. Prostaglandins help in movement of sperm towards the ova and make the mucous membrane of cervix receptive to the sperm.
Right option is C. likely reduce the volume of semen.
11. Menstrual cycle is a cycle seen in monkeys and humans, wherein the endometrium is lost in the form of visible bleeding. The endometrium is shed after the secretory phase. This exposes the blood vessels, which will bleed. Bleeding stops when the endometrium is regenerated during the follicular phase. In estrous cycle, the endometrium that is lost will be reabsorbed. Hence, no visible bleeding is observed if pregnancy doesn’t occur. The estrous cycle is seen in most mammals such as rodents, horse, sheep.
Right option is A.
12. Spermatogenesis is the process of production of sperms by the testis from germ cells. It occurs in the testis. Sperm is produced by the testes in response to the hormone testosterone. It is not associated with the uterine cycle, which is in females.
Right option is C. Spermatogenesis
13. In the follicular phase of uterine cycle, estrogen is released by the ovary, which will cause proliferation of the uterine cells. When the estrogen levels peak, Luteinizing hormone is released by the pituitary. Ovulation, release of the ovum, from the follicle will occur around 24 hours after LH peak. The ovum is released and the corpus luteum is formed which secreted progesterone.
Right option is A. Luteinizing hormone.
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