32 Questions
What is the primary function of Sertoli cells in the seminiferous tubules?
To control sperm production and create a blood-testes barrier
What is the approximate number of chromosomes in a single male gamete?
23
What is the purpose of the dartos and cremaster muscles in the scrotum?
To control the temperature of the testes by contracting or relaxing
What is the function of the tunica albuginea in the testes?
To separate each testis into 300-400 lobules
What is the total number of chromosomes in a fertilized zygote?
46
What is the primary location of sperm production in the testes?
In the seminiferous tubules
What is the primary function of the breasts in relation to the reproductive system?
To provide milk or colostrum through lactation
What is the primary mechanism by which hormonal birth control works?
By supplying a constant amount of estrogen and progesterone
Which cells are capable of developing into either male or female reproductive systems?
Bipotential cells
At what age does the hypothalamus begin to produce more hormones, leading to sexual maturity?
At puberty
What is the effect of poor nutrition on puberty in females?
It leads to an earlier onset of puberty
What is the typical age range for the growth spurt in males?
Into early 20’s
What is the process called when the developing sperm cell divides to form spermatids, and then finally sperm?
Spermatogenesis
What is the purpose of the tightly packed mitochondria in the midpiece of the sperm cell?
To produce ATP to power the flagellum
How often does a new cycle of sperm development start?
Every 16 days
What is the main function of the epididymis in the male reproductive system?
To store and mature sperm
What is the percentage of semen that is made up of sperm?
5%
What is the primary function of the microorganisms present in the vagina?
To protect the reproductive tract from pathogens
What is the estimated duration of an ovarian cycle?
28 days
What is the role of the prostate in the male reproductive system?
To add fluid to coagulate the semen
What is the hormone responsible for differentiating the male sexual reproductive organs in a fetus?
Testosterone
What is the fate of the 3 smaller cells that result from oocyte division?
They disintegrate eventually
What is the term for one or both testes failing to descend into the scrotum prior to birth?
Cryptorchidism
What is the source of mitochondrial DNA in the zygote?
Only the mother
What triggers the LH surge in the ovarian cycle?
High levels of estrogen
What is the part of the penis that contains the majority of nerve endings?
Glans penis
What is the function of nitric oxide in the penis during erection?
To relax muscles and allow blood to flow
What is the purpose of the cilia in the uterine tubes?
To create a current for the oocyte to travel to the uterus
What is the result of contagens moving up into the uterine tubes?
Pelvic inflammatory disease
What is the primary function of the corpus luteum?
To produce progesterone
What is the characteristic of the functional layer of the uterus?
It is thick and shed during menses
What is the primary function of the proliferative phase of the menstrual cycle?
To regenerate the endometrium
Test your knowledge on the human reproductive system, including gametes, chromosomes, and the process of sperm development. Learn how the male reproductive system works to produce healthy sperm and how they combine with oocytes for proper development.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
