The Male Reproductive System Quiz

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Questions and Answers

Which organ in the male reproductive system contains the testicles that produce semen and sperm?

Penis

Scrotum (correct)

Glans

Urethra

What is the function of the urethra in the male reproductive system?

To support the glans

To ejaculate sperm (correct)

To excrete urine

To produce semen

What happens to the penis when a male becomes sexually aroused?

It becomes flaccid

It becomes smaller

It becomes erect (correct)

It becomes numb

Which muscles are responsible for the movement of the scrotum?

Cremaster and dartos muscles Signup and view all the answers

What is the function of the glans in the male reproductive system?

To support the foreskin Signup and view all the answers

Which blood vessels are responsible for supplying the penis?

Pudendal arteries Signup and view all the answers

What is the main function of the scrotum in the male reproductive system?

To protect the testicles Signup and view all the answers

What happens to the scrotum during times of lower temperatures?

It contracts and pulls closer to the body Signup and view all the answers

What is the function of the dartos muscle in the scrotum?

To give it a wrinkled appearance Signup and view all the answers

What is the function of the meatus in the male reproductive system?

To excrete urine Signup and view all the answers

Which structure becomes the ductus deferens?

A portion of the mesonephric duct Signup and view all the answers

When do the testes descend into the scrotal sac?

Between the sixth and 10th week Signup and view all the answers

What causes the differentiation of the external genitalia in males?

Androgens secreted by the testes Signup and view all the answers

What determines the genetic sex of an embryo?

The presence of a Y chromosome Signup and view all the answers

What happens to testosterone secretion during puberty?

It increases Signup and view all the answers

What causes the male secondary sexual characteristics to be manifested during puberty?

Increased gonadotropin secretion Signup and view all the answers

What structures form the spermatic cord?

The testicular vessels and nerves Signup and view all the answers

What is the function of the gubernaculum?

To descend the testis into the scrotum Signup and view all the answers

When is the development of the prepubertal male reproductive system completed?

At birth Signup and view all the answers

What can a failure in the descent of the testes cause?

Both indirect inguinal hernia and infantile hydrocoele Signup and view all the answers

Which structure connects the scrotum with the abdomen or pelvic cavity?

The inguinal canal Signup and view all the answers

What is the function of the testicles?

To synthesize and secrete androgens Signup and view all the answers

Where are androgens synthesized in the male reproductive system?

In the Leydig cells Signup and view all the answers

What happens to sperm cells in the epididymis?

They undergo maturation Signup and view all the answers

What is the function of the vas deferens?

To carry spermatozoa to the ejaculatory duct Signup and view all the answers

Which glands provide fluids that lubricate the duct system and nourish the sperm cells?

All of the above Signup and view all the answers

What is the function of the prostate gland?

To produce seminal fluid Signup and view all the answers

Which structures are masculinized by secretions of the testes?

All of the above Signup and view all the answers

At what stage of development does the differentiation of the external genitalia occur?

10-12 weeks Signup and view all the answers

What is the active agent within the embryonic reproductive organs that mediates the androgen effect?

Dihydrotestosterone (DHT) Signup and view all the answers

Study Notes

Male Reproductive System

The scrotum contains the testicles that produce semen and sperm.

Functions of Male Reproductive Organs

The urethra is responsible for transporting semen and urine out of the body.
The penis becomes engorged with blood and erect during sexual arousal.
The cremaster muscle and dartos muscle are responsible for the movement of the scrotum.

Blood Supply and Nourishment

The internal pudendal artery and vein are responsible for supplying the penis with blood.
The scrotum provides a regulated temperature for sperm development and maintenance.

Development and Differentiation

The gubernaculum guides the testes into the scrotal sac during fetal development.
The descent of the testes into the scrotal sac typically occurs between the 7th and 8th months of fetal development.
Androgens (male hormones) determine the genetic sex of an embryo and cause the differentiation of the external genitalia in males.
Androgens also stimulate the development of the male reproductive system.

Hormonal Changes during Puberty

Testosterone secretion increases during puberty, causing the development of male secondary sexual characteristics.

Sperm Development and Maturation

The epididymis is a tube-like structure where sperm cells mature and are stored.
The vas deferens, also known as the ductus deferens, is a muscular tube that transports sperm from the epididymis to the urethra.

Accessory Glands and Structures

The seminal vesicles, prostate gland, and urethral glands provide fluids that lubricate the duct system and nourish the sperm cells.
The prostate gland produces fluids that make up semen.

Embryonic Development

The differentiation of the external genitalia occurs around the 12th week of fetal development.
Diethylstilbestrol (DES) is the active agent within the embryonic reproductive organs that mediates the androgen effect.

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Description

Test your knowledge of the male reproductive system and its functions with this quiz. Learn about the organs involved in human reproduction and how they contribute to the fertilization process.