18 Questions
What is the function of fructose in semen?
Provide energy for sperm
What is the role of prostaglandins in semen?
Stimulate peristaltic contractions of female reproductive tract
What count of sperm cells per mL is considered infertility (sterility)?
< 20-25 million/mL
How do anticoagulant factors in semen function?
Dissolve clots in semen
What determines the sex of an organism?
Number of chromosomes
What initiates ejaculation?
Sympathetic nerve impulses
Which organ in the male reproductive system is responsible for producing sperm cells?
Testes
What is the main function of the urethral sphincters during ejaculation?
To constrict and prevent semen from entering the urethra
What is the function of the scrotum in the male reproductive system?
Maintain temperature of testes
Which part of the male reproductive system is responsible for storing sperm cells?
Epididymis
What are the secondary sex organs in females?
Uterine tubes, Uterus, Vagina
What are secondary sex characteristics?
Features that attract sexes to each other
What is the main function of the bulbospongiosus muscles of the penis?
Propelling semen from the urethra
How long are sperm cells typically viable for?
2 days
What is the approximate number of sperm cells that reach the destination during fertilization?
100
How many spermatozoids does a man deposit during sexual intercourse?
200 million
How many sperm cells out of the millions deposited actually reach the egg?
~300-500
What is the likelihood of a single sperm fertilizing the egg?
1 in hundreds of millions
Test your knowledge on the male and female reproductive system parts and functions, including the determination of sex by sex chromosomes. Explore the concept of sexual reproduction and how sex organs work together in organisms.
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