biologfy paper
L. PETERSON/AP BIOLOGY
Describe the role of the hypothalamus, the pituitary hormones, and the ovarian hormones in the regulation of the human menstrual cycle. Include in your discussion the concept of feedback control and the way in which fertilization of the egg alters the menstrual cycle.
STANDARDS:
Hypothalamus and Feedback: Maximum 6 pts.
__low progesterone or estrogen resulting in positive feedback
__secretion of a releasing factor
__secretion of pituitary FSH
__high level of progesterone or estrogen resulting in negative feedback
__causing a decrease in LH releasing factor
__causing a decrease in LH
__the "pill" and its influence on feedback
__influence of stress on feedback
Pituitary Hormones: Maximum 6 pts.
__FSH secretion by the pituitary gland
__the effect of FSH on egg formation
__stimulation of estrogen secretion by FSH
__LH (or FSH & LH) resulting in ovulation
__corpus luteum formation by LH stimulation
__progesterone secretion by LH stimulation
__decreased LH causing corpus luteum breakdown
__formation of corpus albicans
Ovarian Hormones: Maximum 4 pts.
__estrogen secretion by follicles inhibiting menstrual flow
__estrogen secretion initiating endometrial growth
__progesterone from corpus luteum promoting further endometrial growth & vascularization
__low level of progesterone and estrogen causing menstrual flow
Fertilization: Maximum 2 pts.
__effect of human or placental chorionic gonadotropin on the pituitary gland
__no menstrual cycle
Bonus Point: Maximum 1 pt.
__mentioning the days or phases of the cycle
__a good descriptive diagram
__a high estrogen level resulting in stimulation of the hypothalamus to release more LHRF
Maximum of 12 if Fertilization and Feedback are not included in the discussion.
Maximum of 14 if either Fertilization or Feedback are discussed and not both.
ANIMAL REPRODUCTION QUESTION 1989: L. PETERSON/AP BIOLOGY
Describe negative and
Describe the role of the hypothalamus, the pituitary hormones, and the ovarian hormones in the regulation of the human menstrual cycle. Include in your discussion the concept of feedback control and the way in which fertilization of the egg alters the menstrual cycle.
STANDARDS:
Hypothalamus and Feedback: Maximum 6 pts.
__low progesterone or estrogen resulting in positive feedback
__secretion of a releasing factor
__secretion of pituitary FSH
__high level of progesterone or estrogen resulting in negative feedback
__causing a decrease in LH releasing factor
__causing a decrease in LH
__the "pill" and its influence on feedback
__influence of stress on feedback
Pituitary Hormones: Maximum 6 pts.
__FSH secretion by the pituitary gland
__the effect of FSH on egg formation
__stimulation of estrogen secretion by FSH
__LH (or FSH & LH) resulting in ovulation
__corpus luteum formation by LH stimulation
__progesterone secretion by LH stimulation
__decreased LH causing corpus luteum breakdown
__formation of corpus albicans
Ovarian Hormones: Maximum 4 pts.
__estrogen secretion by follicles inhibiting menstrual flow
__estrogen secretion initiating endometrial growth
__progesterone from corpus luteum promoting further endometrial growth & vascularization
__low level of progesterone and estrogen causing menstrual flow
Fertilization: Maximum 2 pts.
__effect of human or placental chorionic gonadotropin on the pituitary gland
__no menstrual cycle
Bonus Point: Maximum 1 pt.
__mentioning the days or phases of the cycle
__a good descriptive diagram
__a high estrogen level resulting in stimulation of the hypothalamus to release more LHRF
Maximum of 12 if Fertilization and Feedback are not included in the discussion.
Maximum of 14 if either Fertilization or Feedback are discussed and not both.
ANIMAL REPRODUCTION QUESTION 1989: L. PETERSON/AP BIOLOGY
Describe negative and