Anatomy of the Male Reproductive System Flashcards
What is the general function of the reproductive system?
General Function of the Reproductive System:
- Produce offspring
- Initiate and maintain the internal conditions required for production of gamates
- Promote 2o sexual characteristics (useful for attracting a mate)
- Facilitate joining of the gametes
- Provide for early development and care of offspring
Define semen.
Semen: A liqiud medium in which sperm leave the body
- Also known as seminal fluid
Name the accessory glands.
State what each gland contributes.
Accessory glands involved in semen production in order:
-
Seminal glands
- Produce 70% of seminal fluid consisting of:
- Buffer (alkaline), fructose, mucus, and clotting factor
- Produce 70% of seminal fluid consisting of:
-
Prostate gland
- Buffer (alkaline), mucus, activator (to tell the sperm to swim), and clot buster (allows the sperm to swim)
-
Cowper’s/bulbourethral gland
- Buffer (alkaline), and mucus
Trace the pathway of a sperm from its formation site to the external environment.
Pathway of Sperm
- Seminiferous tubule of testes (formation site)
- Epididymus
- Vas/ ductus deferens
- Ampulla of ductus deferens
- Ejaculatory duct
- Prostatic urethra
- Spongy (penile) urethra
- External urethra orifice
- External environment
Identify the structures and their function.
Male Reproductive System
-
Vas/ ductus deferens
- Sperm transport tube
-
Prostatic urethra
- Connects the ejaculatory duct to the spongy urethra for semen
-
Pubis
- Bone
-
Corpus cavernosum
- Erectile tissue for penis
-
Corpus spongiosum
- Erectile tissue around urethra
-
Spongy (penile) urethra
- Tube for urine and semen
-
Glans penis
- Tip of penis with a high density of nerves
-
Prepuce
- Foreskin
- External urethral orfice
Identify the structures and their function.
Male Reproductive Anatomy
-
Seminal vesicle
- Produces 70% of seminal fluid (buffer, mucus, clotting factor, and sugar)
-
Ampulla of ductus deferens
- Enlargement of the ductus deferens at the fundus of the bladder
-
Ejaculatory duct
- Formed by the union of the vas deferens with the duct of the seminal vesicle
-
Prostate gland
- Secretes buffer, clot buster, activator, and mucus for semen
-
Bulbourethral gland/Cowper’s
- Secretes buffer and mucus for semen
-
Bulb of penis
- Base of penis
Identify the structures and their function.
Male Reproductive Anatomy
-
Epididymis
- Site of sperm maturation (“sperm college”)
-
Testis
- Consists of the seminiferous tubules that make sperm
- Produces testosterone
-
Scrotum
- Regulates temperature for testes
Name the structures.
Male Reproductive System
- Peritoneum
- Rectum
- Anus
- Ureter
- Urinary bladder
- Membranous urethra
- Urogenital diaphragm
Identify the structures.
Male Reproductive Anatomy
- Urinary bladder
- Prostate gland
- Prostate urethra
- Orifices of prostatic duct
- Membranous urethra
- Orifice of ureter
- Orifices of ejaculatory ducts
- Bulbourethral/ Cowper’s gland and duct
- Urogential diaphragm
Identify the structures.
Male Reproductive System
- Root of penis
- Shaft (body of penis)
- Bulb of penis
- Crus of penis
- Bulbourethral/ Cowper’s gland opening
- Corpora cavernosa
- Corpus spongiosum
Identify the structures.
Male Reproductive System
- Spongy (penile) urethra
- Glans penis
- Prepuce (foreskin)
- External urethral orifice
Identify the structures.
Male Reproductive System
- Dorsal vessels and nerves
- Skin
- Deep arteries
- Corpora cavernosa
- Urethra
- Tunic albuginea of erectile bodies
- Corpus spongiosum
Identify the structures.
Male Reproductive System
- Dorsal vein
- Dorsal artery
- Dorsal nerve
- Corpus spongiosum
- Corpus cavernosum
- Deep fascia
- Superficial fascia
Identify the structures.
Male Reproductive System
- Skin
- Urethra
- Corpus spongiosum
- Prepuce (foreskin)
- Glans penis
- External urethral orifice
Identify the structures.
Male Reproductive Anatomy
- Deep artery
- Tunica albuginea
- Lacunae
- Median septum
Name and give the function of each part of the testis.
Testis
-
Rete testis
- Tubule that carries sperm from seminiferous tubule to efferent duct
-
Seminiferous tubule
- Sperm-forming factories
-
Lobule
- Contains seminiferous tubules
-
Tunica albuginea
- Dense connective tissue (white matter)
-
Tunica vaginalis
- Serous covering of testis