BIO 222 Reproductive System 8

BIO 222 Anatomy & Physiology 2 Lab

Scrotum

Supporting structure for the testes. It looks like a single pouch of skin. Internally, there is a septum that divides the scrotum into 2 sacs, each containing a single testis

Penis

Contains the urethra; a passageway for semen and urine

Spermatic cord

Ascends out of the scrotum and passes through the inguinal canal

Spermatic cord consists of the following structures:

Vas deferens.

Testicular artery.

Pampiniform plexus.

Nerves.

Lymphatic vessels.

Cemaster muscle.

Cremaster muscle

Skeletal muscle that descends through spermatic cord to surround the testes

Pampiniform plexus

A network of veins in the spermatic cord; responsible for venous drainage of the testes; it wraps itself around the testicular artery

Testes

Paired glands in the scrotum; produce sperm and secrete hormones

Seminiferous tubules

Tightly coiled tubules located in the testes where sperm are produced

Accessory Sex Glands:

Seminal vesicles (paired).

Prostate gland.

Bulbourethral glands (paired).

Seminal vesicles (paired)

Located posterior to urinary bladder

Prostate gland

Located inferior to urinary bladder

Bulbourethral glands (paired)

Located inferior to the prostate

System of Ducts:

Epididymis.

Vas (ductus) deferens.

Ejaculatory ducts.

Urethra.

Epididymis

An organ that lies along the posterior border of each testicle

Vas (ductus) deferens

Ascends through spermatic cord and then enters pelvic cavity; passes down posterior surface of urinary bladder

Ejaculatory ducts

Formed by the union of the vas deferens and the seminal vesicle; passes anteriorly through the prostate

Urethra

in males, the urethra is a shared terminal duct of the reproductive and urinary systems; serves as a passageway for semen and urine; it passes through the prostate and the penis

Uterus

Located superiorly to the urinary bladder

Subdivisions of the uterus:

Fundus.

Body.

Cervix.

Fundus

Dome shaped portion

Body

A tapering center portion

Cervix

An inferior narrow portion; opens into vagina

Fallopian tubes (or uterine tubes)

Extend laterally from the uterus

Fimbriae

Fingerlike projections attached to the lateral end of the ovary

Ovaries

Paired glands that produce an immature egg and secrete hormones

Vagina

A canal that extends from the uterine cervix to the exterior of the body; sits between the urinary bladder and the rectum