human reproduction Flashcards
What is the average length of a menstrual cycle?
28 days
True or False: The menstrual cycle is the same for all women.
False
What hormone triggers ovulation?
Luteinizing hormone (LH)
Fill in the blank: The menstrual cycle is divided into _______ phases.
four
What are the four phases of the menstrual cycle?
Menstrual phase, Follicular phase, Ovulation phase, Luteal phase
During which phase does the uterine lining thicken?
Follicular phase
What is menstruation?
The shedding of the uterine lining
True or False: Ovulation occurs approximately 14 days before the start of the next menstrual period.
True
What hormone is primarily responsible for the development of follicles?
Follicle-stimulating hormone (FSH)
What is the average duration of menstruation?
3 to 7 days
Which phase follows ovulation?
Luteal phase
Multiple Choice: What happens to hormone levels if fertilization does not occur? A) They increase B) They decrease C) They remain the same
B) They decrease
What is the primary function of the corpus luteum?
To produce progesterone
Fill in the blank: The average menstrual cycle ranges from _______ to _______ days.
21 to 35
What is premenstrual syndrome (PMS)?
A group of symptoms that occur before menstruation
True or False: Stress can affect the menstrual cycle.
True
What is the role of estrogen in the menstrual cycle?
To promote the thickening of the uterine lining
What is anovulation?
The absence of ovulation
During which phase does the egg travel through the fallopian tube?
Ovulation phase
What is the typical lifespan of an ovulated egg?
12 to 24 hours
Multiple Choice: Which hormone is highest during the luteal phase? A) Estrogen B) Progesterone C) Testosterone
B) Progesterone
What is the main purpose of the menstrual cycle?
To prepare the body for potential pregnancy
True or False: Menopause marks the end of the menstrual cycle.
True
What is menarche?
The first occurrence of menstruation
Fill in the blank: The average age of menarche is around _______ years.
12 to 13
What is the luteal phase’s effect on the uterine lining?
It becomes more vascular and glandular
What can irregular menstrual cycles indicate?
Hormonal imbalances or health issues
