Chapter 28 B Male Repro

Scrotum

Skin-covered sac that provides the testes with a cooler environment than body temperature (Same as labia majora in female)

Spermatic Cord

originates in the inguinal canal, and consists of muscle, vasculature, and nervous tissue

Inguinal canal

Hole where spermatic cord runs through

Testis

Oval Organ within Scrotum

Produces

• Sperm

• Testosterone

Lobules

Spaces within each testes (250)

Seminiferous Tubules

Each lobule contains up to four convoluted

Spermatogenesis

Production of Sperm

Seminiferous Tubules

Where Sperm is produces

Epididymis

Ductus deferens

Ejaculatory duct

Urethra

•From testis through the penis, the ducts are:

Epididymis

•Situated on the posterosuperior surface of the testes

•Stores sperm cells and assists in their maturation 

Least amount of Sperm Produced

Ductus Deferens/ Vas Deferens

•Sperm leaving the epididymis enter the thick-walled _____

•The ductus deferens travels within the spermatic cord and enters the pelvic cavity through the inguinal canal

Ejaculatory Duct

The ductus deferens unites with the proximal portion of the seminal vesicle to form the _____

Each _________ is 1–2 cm long

Ducts conduct sperm and seminal vesicle secretions to the prostatic urethra

Urethra

The _____ transports semen from both ejaculatory ducts to the outside of the body

Prostatic urethra

Membranous urethra

Spongy urethra

The male urethra is subdivided into three regions called

Seminal fluid

Three glands secrete fluids to mix with sperm to create

–Seminal vesicles

–Prostate gland

–Bulbourethral glands

The three accessory glands include

Alkaline

Sperm

Acidic

Vagina

Seminal Vesicles

-on posterior surface of urinary bladder, lateral to the ampulla of the ductus deferens

-They are elongated, hollow organs

-They secrete a viscous, whitish-yellow, alkaline fluid containing fructose and prostaglandins

Produces the Most Sperm

Prostate Gland

-located immediately inferior to the urinary bladder

-It secretes directly into the prostatic urethra

Mid amount of Sperm

Bulbourethral Glands

Two pea-sized exocrine glands in the male reproductive system located behind the urethra, below the prostate

Semen

Seminal fluid from the three accessory glands combines with sperm from the testes to make up

Ejaculate

When released, semen is called

Penis

External Genitalia

Body/Shaft

Elongaged Portion

Glans

The tip of the penis

Prepuce

Penis Hoodie

External urethral orifice

Hole of penis

Paired (2) Corpora cavernosa

1 Corpus Spongiosum

The shaft of the penis contains three parallel, cylindrical erectile bodies called

corpus spongiosum

It surrounds the spongy urethra

The distal end of the corpus spongiosum continues within the glans

Benign Prostatic Hyperplasia (BPH)

•Growth of prostate constricts the urethra

•Affects urine flow

•Treatment via medication

Inguinal hernia

Soft tissue protrudes through the inguinal canal

Female Ovary

Homologues Male Testis

Female Clitoris

Homologues Male Glans of Penis

Female Labia Minora

Homologues Male Body of Penis

Female Labia Majora

Homologues Male Scrotum

Female Greater Vestibular Gland

Homologues Male Bulbourethral Gland