6.1 Female Reproductive System Part 5 Flashcards
When is FSH secreted?
at the start of puberty
What does FSH cause?
a few follicles to mature each month
What results from the first meiotic division of the primary oocyte?
secondary oocyte and polar body
What happens if a secondary oocyte is united with a sperm?
undergoes second meiotic division which produces a second polar body and an ovum
How many chromosomes does a fertilized egg have?
46
What does the anterior pituitary gland secrete at the time of ovulation?
LH
What is the purpose of LH?
causes the follicle to become the corpus luteum
What produces estrogen and progesterone?
ovaries
What is estrogen important for?
production of eggs in the menstrual cycle
secondary sex characteristics
What are secondary sex characteristics involved in?
develop changes that occur throughout the body beginning in puberty
What are examples of secondary sex characteristics in females?
enlarged breasts
widening of pelvis
fat deposits in breast, hips, and buttocks
What is progesterone necessary for?
maintenance of pregnancy
Does progesterone promote secondary sex characteristics?
no
What is the menstrual cycle also known as?
uterine cycle
What are the three phases of the menstrual cycle?
menstrual
proliferative
secretory
When does the menstrual phase begin and end?
day one through day five
What occurs during the menstrual phase?
all but the innermost basal layer of the endometrium is shed
When does the proliferative phase occur?
days 6-14
What occurs during the proliferative phase?
endometrium rebuilds in response to increase in estrogen levels
When does ovulation typicallyoccur?
day 14
