Male Reproductive System: Testis, Spermatogenesis, and Gland Functions

Testis or testicle

Also called the male gonad; organ that produces spermatozoa

Spermatozoon

Male reproductive cell, the sperm, male sex cell, or seed and is formed in the testis

Spermatogenesis

Production of spermatozoa, and includes the divisions necessary to produce mature spermatozoa, each with 23 chromosomes

Semen

Thick white fluid containing spermatozoa and the secretions of the other male reproductive glands

Puberty

In the male, is the age at which the testes begin to produce mature spermatozoa, with an increase in the secretion of the male sex hormones, the androgens

Male gonad

Testis

Sterilization

Prevention of mature spermatozoa from being discharged from the male organs

Castration

Any procedure by which spermatozoa are prevented from forming

Fertility

Ability to produce offspring by a spermatozoon uniting with an ovum

Male gamete

Male reproductive cell, spermatozoon

Seminiferous tubules

1 to 3 minute coiled tubules

Efferent duct

15 - 20 larger tubules

Epididymis

Single tube

Scrotum

Sac that is suspended below the pubic arch, anterior to the upper thighs

Testes

Two glands in the male that produce spermatozoa

Prostate gland

Single globular gland that is located in the male pelvis below the urinary bladder

Seminal Vesicles

Two elongated nodular glands that lie obliquely in the pelvis posterior to the bladder

Bulbourethral gland

Small pea shaped gland lie one on each side of the membranous part of the urethra

Deferent Duct

Continuation of the epididymis; terminated by joining the excretory duct of the same side to form the ejaculatory duct

Ejaculatory duct

Formed by the union of a deferent duct with the corresponding excretory duct from the seminal vesicle

Penis

Male organ of copulation

Corpora cavernosa

2 cylinders of erectile tissue that occupy the lateral and upper parts of the organ

Corpora spongiosum

Single smaller cylinder of erectile tissue that extends from the membranous urethra to the end of the penis; it is centrally located

Erectile tissue

Tissue that when filled with blood enlarges and becomes firm

Spermatic cord

Right or left small ropelike structure that extends from the scrotum on each side up over the pubic bone to the anterior abdominal wall

2 testes

prostate gland

2 seminal vesicle

2 bulbourethral gland

components of male reproductive glands

right and left epididymis

right and left deferent ducts

right and left ejaculatory ducts

enumerate the ducts

testis, orchis

latin and greek for testes

2 inches

length of testes

Seminiferous tubules

efferent ducts

epididymis

scrotum

spermatozoon

testicular arteries, testicular veins, lymphatic vessels

structures of testes SEESST

20 small ducts

Prostate glands form for about <> and empties into the prostatic part of the urethra

prostatic part of urethra

prostate gland empties into the <>

3 inches

length of the seminal vesicle

20 feet

epididymis stretch about

15 - 20 efferent tubules; seminiferous tubules

epididymis begins at the upper end of the testis by the union of the <> formed by the minute tubules <>

vas deferens, ductus deferens

latin word for deferent duct

seminal vesicle and deferent duct

ejaculatory duct is formed by the union <> and <>

penis, phallos

latin and greek term for penis

6 inches

penis length

2 corpora cavernosa

1 corpora spongiosum

3 cylinders of erectile tissue of penis

penile part of urethra

runs through the center of the corpus spongiosum and opens at the gland by slit like orifice, the external opening