Answer to Question 1
2, 3, 4
Rationale 1: Decrease blood flow is not a mechanism of action of estrogen and progestin.
Rationale 2: The estrogenprogestin oral contraceptives prevent ovulation, which is required for conception to occur. These hormones act by providing negative feedback to the pituitary that shuts down secretion of LH and FSH. Without these pituitary hormones, the egg cannot mature, and ovulation is prevented. The estrogenprogestin agents also make the lining of the uterus less favorable to receiving an embryo.
Rationale 3: The estrogenprogestin oral contraceptives prevent ovulation, which is required for conception to occur. These hormones act by providing negative feedback to the pituitary that shuts down secretion of LH and FSH. Without these pituitary hormones, the egg cannot mature, and ovulation is prevented. The estrogenprogestin agents also make the lining of the uterus less favorable to receiving an embryo.
Rationale 4: The estrogenprogestin oral contraceptives prevent ovulation, which is required for conception to occur. These hormones act by providing negative feedback to the pituitary that shuts down secretion of LH and FSH. Without these pituitary hormones, the egg cannot mature, and ovulation is prevented. The estrogenprogestin agents also make the lining of the uterus less favorable to receiving an embryo.
Rationale 5:They cause permanent sterilization is incorrect because this is not a mechanism of action for estrogen and progestin.
Global Rationale: The estrogenprogestin oral contraceptives prevent ovulation, which is required for conception to occur. These hormones act by providing negative feedback to the pituitary that shuts down secretion of LH and FSH. Without these pituitary hormones, the egg cannot mature, and ovulation is prevented. The estrogenprogestin agents also make the lining of the uterus less favorable to receiving an embryo.
Answer to Question 2
1
Rationale 1: The testes secrete testosterone, the primary androgen responsible for maturation of the male sex organs and the secondary sex characteristics of men.
Rationale 2: Progesterone promotes breast development and regulates the monthly changes in the uterus.
Rationale 3: Follicle-stimulating hormone (FSH) in men regulates sperm production.
Rationale 4: Estrogen is responsible for the maturation of the female reproductive organs and for the appearance of secondary sex characteristics.
Global Rationale: The testes secrete testosterone, the primary androgen responsible for maturation of the male sex organs and the secondary sex characteristics of men. Progesterone promotes breast development and regulates the monthly changes in the uterus. Follicle-stimulating hormone (FSH) in men regulates sperm production. Estrogen is responsible for the maturation of the female reproductive organs and for the appearance of secondary sex characteristics.