32 Questions
What is the total number of chromosomes in a sperm cell and an oocyte combined for proper development?
46
What is the primary function of the Sertoli cells in the seminiferous tubules?
To control sperm production and create the blood-testes barrier
What happens to the testes in cold weather or cold water?
They are pulled up closer to the body
How many lobules are found in each testis?
300-400
What is the purpose of the blood-testes barrier created by the Sertoli cells?
To keep blood-borne substances away from the germ cells and prevent an autoimmune response
What is the main reason why the testes are located in the scrotum, outside of the abdominal cavity?
To keep them at a cooler temperature for efficient sperm production
What is the term for one or both testes failing to descend into the scrotum prior to birth?
Cryptorchidism
How many chromosomes do spermatogonia have?
46
What is the function of the tightly packed mitochondria in the midpiece of the sperm?
To produce ATP to power the flagellum
What is the percentage of semen that is made up of sperm?
5%
What is the term for the fluid released by the bulbourethral glands to lubricate and clean away urine residue?
Pre-ejaculate
What is the role of nitric oxide in the process of erection?
To relax muscles and allow blood to flow
What is the hormone responsible for regulating testosterone production?
Gonadotropin releasing hormone (GRH)
What is the function of the labia minora in the female reproductive system?
To protect the urethra and female reproductive system
What is the term for the process by which sperm cells are produced?
Spermatogenesis
What is the function of the epididymis in the male reproductive system?
To store and mature sperm cells
What is the primary function of the microorganisms present in the vagina?
To protect from pathogens
What is the approximate duration of an ovarian cycle?
28 days
What is the term for the process by which the oocyte splits into multiple cells, but only one survives?
Meiosis
What is the reason why mitochondrial DNA is inherited only from the mother?
Because the ovum has a lot of cytoplasm
What is the term for the death of multiple follicles during the ovarian cycle?
Atresia
What is the hormone that stimulates the growth of follicles during the ovarian cycle?
FSH
What is the structure that forms from the collapsed follicle after ovulation?
Corpus luteum
What is the function of the cilia in the uterine tubes?
To produce a current for the oocyte to travel to the uterus
What is the phase of the menstrual cycle characterized by the regeneration of the endometrium and rising estrogen levels?
Proliferative phase
What is the layer of the uterus that is released during the menses phase of the menstrual cycle?
Thicker functional layer
What is the primary function of the breasts in the reproductive system?
To provide milk or colostrum through lactation
What is the result of the degradation of the corpus luteum in the absence of pregnancy?
Shedding of the endometrium
What is the primary mechanism of action of hormonal birth control?
Supplying a constant amount of estrogen and progesterone
What is the role of the Y chromosome in the development of the male reproductive system?
To trigger the cascade of factors that differentiate the male reproductive system
What is the effect of poor nutrition on puberty in females?
Increased body fat leading to earlier puberty
What is the typical age range for the growth spurt in males?
11-13 years old
Test your knowledge of the human reproductive system, including the formation of gametes, chromosomes, and the role of the testes and scrotum in sperm production. Learn how the male reproductive system works to ensure proper development. Take this quiz to see how well you understand the basics of human reproduction!
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
