Male Genitalia and Rectum Introduction

Male Reproductive System

• The penis plays a crucial role in urination and sexual reproduction.

Urethral Meatus

• The urethral meatus is located at the tip of the penis.

Foreskin/Prepuce

• The foreskin or prepuce is a fold of skin that covers the glans penis and helps to protect it.

Scrotum

• The scrotum is a sac of skin and muscle that contains the testes, located below the penis.

Cremaster Muscle

• The cremaster muscle is responsible for moving the testes upwards towards the body for warmth and downwards away from the body for cooling.

Testes

• The testes produce spermatozoa and testosterone, essential for male reproduction.

Tunica Vaginalis

• The tunica vaginalis is a serous membrane that surrounds the testes, providing protection and reducing friction.

Spermatic Cord

• The spermatic cord is a bundle of structures that includes the vas deferens, arteries, and veins, and it provides a pathway for the vas deferens to travel through.

Vas Deferens

• The vas deferens travels through the spermatic cord and into the prostate gland, where it empties into the urethra.

Prostate Gland

• The ejaculatory duct, which is formed by the union of the vas deferens and the seminal vesicle, empties into the urethra within the prostate gland.

Inguinal Area

• The inguinal area is located in the lower abdomen, where the spermatic cord passes through the inguinal canal.

Inguinal Canal

• The inguinal canal is a passageway that runs diagonally between the anterior superior iliac spine and symphysis pubis.

Spermatic Cord Contents

• The spermatic cord contains the vas deferens, arteries, veins, and nerves.

Testes Suspension

• The testes are suspended in the scrotum by the spermatic cord.

Epididymis

• The epididymis is a tube-like structure that stores and matures spermatozoa, allowing them to develop mobility and fertility.

Semen Formation

• The seminal vesicle, prostate gland, and urethra mix with sperm to form semen.

Learn about the external male genitalia, including the penis and scrotum, their structure, and functions in reproduction and urination.