Reproduction Test Flashcards
Gametes are also called
Spermatozoa (sex cells)
Primary organ in the male reproductive system
Testes (gonads)
Accessory organs for males
Scrotum, ducts, glands, and penis
Pouch of skin and fascia; houses the testes
Scrotum
Needs to be 3 degrees lower than body temperature for live sperm
Scrotum
Paired, oval, each surrounded by 2 tunics
Testes
Outer tunic
Tunica vaginalis
Deeper tunic
Tunica albuginea (white coat)
Divides the testis into compartments called lobules each containing 1-4 seminiferous tubules (sperm factories)
Deeper tunic layer
These tubules converge to form the
Rete testis
Sperm leave the rete testis to go to the
Epidymis
Leading cells surround these tubules and produce
Testosterone
Males role is to produce
Gametes
What transports sperm from the body?
The duct system
Epididymis to the vas deferens to the…
Urethra
20 foot coiled tube
Epididymis
The epididymis caps the superior portion of the
Testis
The epididymis receives immature sperm from the
Seminiferous tubules
The epididymis temporarily stores
Sperm
How long does it take for sperm to become mobile and fertile?
About 20 days
The ductus deferens is also called
Vas deferens
The ductus deferens is about
18 inches long
The vas deferens ascends into the
Pelvic cavity over the bladder and through the prostate gland and merged with the urethra
The vas deferens transports sperm from the
Epididymis to the urethra
When a doctor cuts or cauterizes the vas deferens in the scrotum and sperm cannot reach the body exterior
Vasectomy
The terminal end portion of the male duct system
Urethra
Conveys urine or semen to the tip of the penis
Urethra
What are the accessory glands (4)
Seminal vesicles, prostate gland, Cowper’s gland, an penis
2 paired glands located at the base of the bladder
Seminal vesicles
Seminal vesicles produce about 60% of
Semen fluid
Join ductus deferens right before entering the prostate gland and contain sugar
Seminal vesicles
Single walnut sized gland
Prostate gland
The prostate gland encircles the upper part of the urethra just below the
Bladder
The secretion of the prostate gland plays a role in
Activating sperm
Closes off urethra and makes urination difficult. Common in elderly men.
Hypertrophy
Paired glands the size of a pea (also called bulbourethral)
Cowper’s Glands
Cowper’s glands produce clear mucus that
Neutralizes traces of acidic urine in the urethra and serves as a lubricant during sexual intercourse
Copulatory organ that delivers sperm into the vagina
Penis
The penis has an attached root and a free shaft that ends in an enlarged tip called
Glans penis
Skin covering the penis is loose and slides distally to form the
Foreskin or prepuce
Removal of the foreskin after birth
Circumcision
The penis internally contains
Erectile tissue (spongy CT, smooth muscle, and vascular spaces)
During sexual arousal, the vascular spaces fill with blood that causes the penis to enlarge and come rigid
Erection
Failure to attain an erection
Impotence
Milky, white fluid that is a mixture of sperm and gland secretions
Semen
What is the nutrient for sperm
Fructose
What is the amount of semen expelled during ejaculation?
2-6 mL or 500-100 million sperm in each mL
What are the causes of male infertility?
Environmental effects, low sperm count, anatomical obstructions, hormonal imbalance
Performed because of infertility problems
Semen analysis
Semen analysis includes:
Sperm count, sperm motility, sperm morphology (shape), semen volume, semen pH, semen fructose content
Less than 20 million sperm produced per mL makes
Impregnation improbable
Production of sperm in the seminiferous tubules
Spermatogenesis