Male Reproductive System – External and Internal Anatomy and Functions (Video Notes)

A set of Question-and-Answer flashcards covering external and internal male reproductive organs, their functions, and key measurements described in the video notes.

Name two external organs of the male reproductive system mentioned in the notes.

Penis and testes.

What are the two main functions of the penis?

Reproduction (sexual intercourse) and urination.

What is the normal resting length of the penis according to the notes?

9.16 cm.

What is the normal resting circumference (thickness) of the penis?

9.31 cm.

What is the erect penis length?

13.12 cm.

What is the erect penis circumference?

11.66 cm.

What is the longest penis ever reported and where?

17.61 cm, reported in Ecuador.

What is the average penis length for the black race?

14.75 cm.

What is the average penis length for the Caucasian race?

14.5 cm.

What is the average penis length for East Asia?

12.9 cm.

What is the testicle (testes) primarily responsible for?

Producing sperm and testosterone (male hormones).

What is the function of the scrotum?

Protects the testes and helps with thermoregulation to keep testis temperature below body temperature for sperm production.

What is the epididymis and its main function?

A male sex accessory duct that stores sperm for maturation and transports it to the vas deferens; connects testes to vas deferens.

What is the vas deferens?

Transports mature sperm from the epididymis to the urethra; long, muscular tube involved in ejaculation.

What is the urethra?

The hollow tube that lets urine leave the body; can become infected.

What do the seminal vesicles do?

Store and produce most of the fluid in semen; during ejaculation, this fluid mixes with sperm in the ejaculatory duct.

What is the role of the ejaculatory duct?

Delivers sperm into the urethra and adds secretions from the prostate; interfaces the reproductive and urinary systems.

What is the rectum described as in the notes?

Holding area for stool; pushes stool out through the anus when full.

What is the function of the bladder?

Stores urine before it leaves the body through the urethra.

What does the prostate contribute to semen?

Fluid that helps transport sperm; the urethra runs through the center of the prostate.

Where is the pubic bone located and what is its function?

One of the three main bones of the pelvis, located between the abdomen and thighs; provides support for the intestine.