32 Questions
What is the total number of chromosomes present in a sperm cell and an oocyte?
23 and 23
What is the main function of the dartos and cremaster muscles?
To regulate the temperature of the testes
What is the name of the layer that covers the testes and separates each one into lobules?
Tunica albuginea
What is the function of the Sertoli cells in the seminiferous tubules?
To control sperm production and create a blood-testes barrier
How many lobules does each testis have?
300-400
What is the total number of cell types present in the seminiferous tubules?
6
What is the purpose of the microorganisms present in the vagina?
To protect from pathogens
What is the average duration of an ovarian cycle?
28 days
What is the process by which a haploid ovum is formed?
Meiosis
What is the function of the tunica albuginea?
To cover the ovaries
What is the term for the death of multiple follicles?
Atresia
What triggers the LH surge?
High levels of estrogen
What is the function of the uterine tubes?
To facilitate the travel of the oocyte to the uterus
What is the purpose of the corpus luteum?
To produce progesterone
What is the term for the lining of the uterus that is shed during the menses phase?
Functional layer
What is the purpose of the proliferative phase of the menstrual cycle?
To regenerate the endometrium
What is the term for one or both testes failing to descend into the scrotum prior to birth?
Cryptorchidism
What is the primary function of the mitochondria in the midpiece of the sperm cell?
To generate ATP for flagellar movement
What is the approximate number of days it takes for a sperm cell to develop and mature in the epididymis?
12 days
What is the percentage of semen that is composed of sperm?
5%
What is the hormone responsible for regulating testosterone production in the male reproductive system?
Gonadotropin-releasing hormone
What is the term for the fluid released by the bulbourethral glands to lubricate and clean the urethra during sexual arousal?
Pre-ejaculate
What is the process by which the sperm cell divides to form four haploid cells?
Meiosis
What is the structure that covers the vaginal canal and allows fluid to flow out?
Hymen
What is the term for the surgical removal of the foreskin?
Circumcision
What is the primary function of the lysosomal enzymes in the head of the sperm cell?
To break down the acrosome
What happens to the endometrium if there is no pregnancy within 10-12 days?
It is shed
What is the primary function of the breasts in the reproductive system?
To produce milk or colostrum
What is the role of the Y chromosome in the development of the male reproductive system?
It triggers a cascade of factors that differentiate the male reproductive system
What is the effect of poor nutrition on puberty in females?
It leads to an earlier onset of puberty
What is the role of the negative feedback loop in children regarding the hypothalamus and puberty?
It inhibits the production of hormones in the pituitary
At what age does the growth spurt typically occur in males?
Around age 11-13
Test your knowledge on human gametes, their chromosomes, and the reproductive system. Learn how sperm and oocyte combine for proper development and the role of testes in sperm production.
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