Chapter 26 Flashcards
Egg and sperm cells have
23 chromosomes
What is the main regulatory hormone responsible for regulation of gonad function
Gonadotropin-releasing hormone
Uterus =
Müllerian duct
Which statement most accurately describes how the gender of a human embryo is determined
Embryos with the SRY gene become male, those lacking the gene become female
Meiosis of one cell results in production of
4 gametes if male, one if female
Which of the following structures is the source of sperm
Seminiferous tubules
What is the site of spermatogenesis in the testes
Seminiferous tubules
The role of the pituitary hormone FSH in males is to
Initiate sperm production in the testes
Which of the following hormones inhibits FSH secretion in the male
Inhibin
The structure that transports the ovum to the uterus is the
Fallopian tube
The surge in LH that occurs during the middle of the ovarian cycle triggers
Ovulation
The principal hormone secreted by the corpus luteum is
Progesterone
Which of the following is responsible for driving the female libido
Adrenal androgens
Which of the following occurs during an erection
The parasympathetic nervous system dilates the arteries going into the penis
Which of the following occurs during the excitement phase in the female during the human sexual response
Vaginal lubrication
Birth control pills containing hormones estrogen and progesterone work by directly preventing
Ovulation
Successful fertilization of an egg occurs in which of the following area
Successful fertilization normally occurs in the distal 2/3 of the uterine tube
The hormone that is the basis for a pregnancy test is
Human chorionic gonadotropin (hCG)
Order of events of fertilization and implantation occurs
- The egg is fertilized by the sperm
- The cortical reaction occurs, preventing polyspermy
- Mitosis occurs in the Fallopian tubes
- The developing embryo becomes a blastocyst which consists of a hollow ball of cells
- Implantation of the developing embryo
The hormone primarily responsible for the milk let-down reflex is
Oxytocin
