Reproductive male

Question 1

Organs of the Male Reproductive System

Answer 1

2 testes
2 epididymis (in the scrotum)
2 seminal ducts
2 seminal vesicles
2 ejaculatory ducts
Prostate gland
Penis

Question 2

The Scrotum

Answer 2

Pouch of pigmented skin with folds
Contains dartos muscle
Divided into right and left compartments by a muscular septum

Question 3

The Testes

Answer 3

• Male reproductive glands, equivalent to ovaries in females
• Ellipsoidal organs hanging in the scrotum, suspended by spermatic cords
• Covered by three membranes: tunica vaginalis, tunica albuginea, tunica vesculosa

Question 4

Tunica Vesculosa

Answer 4

• Inner membrane of the testes
• Thin areolar tissue with a plexus of blood vessels
• Lines the tunica albuginea and fibrous septa

Question 4

Tunica Vaginalis

Answer 4

• Outer covering of the testes
• Closed sac of serous membrane
• Composed of parietal and visceral layers

Question 5

The Seminal Duct (Vas Deferens)

Answer 5

• Continuation of the epididymis canal
• Passes upwards in the inguinal canal to enter the pelvis
• Part of the spermatic cord

Question 5

The Epididymis

Answer 5

1. Composed of a tortuous canal (18 feet long)
2. Sperm mature and are stored here
3. Divided into caput (head), corpus (body), and cauda (tail)

Question 6

Tunica Albuginea

Answer 6

• Middle membrane of the testes
• Dense, bluish fibrous tissue
• Divides the testis into lobules with incomplete fibrous septa

Question 7

Blood Supply and Drainage of the Testes

Answer 7

• Arterial supply: Testicular artery from the abdominal aorta
• Venous drainage: Testicular vein (left into left renal vein, right into inferior vena cava)
• Lymph drainage: Lymph nodes around the aorta
• Nerve supply: Branches from the 10th and 11th thoracic nerves

Question 8

The Seminal Vesicles

Answer 8

• Two sacs, 5 cm in length, on the posterior aspect of the bladder base
• Composed of a single coiled tube with several diverticula
  Flashcard 11

Question 8

The Prostate Gland

Answer 8

• Chestnut-shaped gland at the base of the bladder
• Surrounds the first part of the urethra
• Base faces upwards, apex directed downwards

Question 9

Purpose of Prostate Gland and Seminal Vesicles

Answer 9

• Seminal vesicles secrete fluid that becomes semen.
• Prostate and seminal vesicles produce secretions that mix with sperm to form semen.
• Semen provides mobility and nutrition to sperm for fertilization

Question 10

The Male Urethra

Answer 10

Outflow pathway for urine and seminal fluid.

Length: 18-20 cm, from internal urethral orifice to external urethral orifice.

Divided into three parts: prostatic urethra, membranous urethra, spongy urethra.

Question 11

The Penis

Answer 11

• Composed of a root (in the perineum) and a body (free and covered with skin).

*Contains three columns of erectile tissue: two cavernosa and one spongiosum.

• Corpus spongiosum surrounds the spongy part of the urethra and corresponds to female vestibular bulbs.
• Glans penis is covered by the prepuce (foreskin).

Question 12

Functions of the Male Reproductive Organs

Answer 12

• Production, maturation, and storage of spermatozoa.
• Delivery of spermatozoa in semen into the female reproductive tract.
• Seminiferous tubules produce spermatozoa, stimulated by follicle-stimulating hormone.
• Spermatozoa become motile in the epididymis and are conveyed to seminal vesicles.

Question 13

Blood Supply and Drainage of the Testes

Answer 13

• Arterial supply: Testicular artery from the abdominal aorta.
• Venous drainage: Testicular vein (left into left renal vein, right into inferior vena cava).
• Lymph drainage: Lymph nodes around the aorta
• Nerve supply: Branches from the 10th and 11th thoracic nerves.

Question 14

The Seminal Vesicles

Answer 14

Two sacs, 5 cm in length, on the posterior aspect of the bladder base.

Composed of a single coiled tube with several diverticula.