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36 Cards in this Set

  • Front
  • Back

-produces male and female gametes


-enhances fertilization of an oocyte by a sperm


-matures the new individual until birth (in the female)


-produces reproductive hormones

Reproductive System

testes in males and the ovaries in females produce gametes

Formation of Gametes

first meiotic division

Reduction division

during the first meiotic division that the chromosome number is reduced from

46 (23 pairs) to 23 chromosomes

testis divide into

250 cone-shaped lobules

second meiotic division is similar to mitosis, chromosomes each consisting of

2 Chromatids

-consists of the testes (sing, testis), a series of ducts, accessory glands and supporting structures

Male Reproductive System

2 supporting structures

scrotum and the penis

saclike structure containing the testes

Scrotum

divided into right and left internal compartments by the incomplete connective tissue septum

Scrotum

layer of smooth muscle and beneath the skin and a layer of loose connective tissue

Dartos muscle

oval organs

Testes: or male gonads

outer part of each testis consists of a thick, white connective tissue capsule

Testes: or male gonads

How many cm is the oval organ?

4-5 cm long

the site of sperm cell development

Seminiferous tubules

located outside the seminiferous tubules

interstitial cell of Leydig

a coiled tube system

Epididymis

a coiled tube system

Epididymis

final changes of sperm cells and occur after ejaculation

capacitation

leads to the rete testis, which opens into the efferent ductules that extends to the epididymis

Seminiferous tubules

located on the testis and is the site of sperm maturation

Epididymis

passes from the epididymis into the abdominal cavity

Ductus deferens

is formed by the joining of the ductus deferens and the duct from the seminal vesicles

Ejaculatory Duct

extends from the urinary bladder through the penis to the outside of the body

Urethra

male organ of copulation and functions in the transfer of sperm cells from the male to the female

Penis

two columns of erectile tissue from the dorsal portion and the side of the penis

corpora cavernosa

third small erectile column occupies the ventral portion of the penis

corpora spongiosum

consists of glandular and muscular tissue

Prostate Gland

a pair of small, mucus-secreting glands located near the base of the penis

Bulbourethral Gland

Bulbourethral Gland also called

Cowper glands

surrounds the urethra and two ejaculatory ducts

Prostate Gland

4th month of development, the ovaries contain 5 million oogonia

Female Reproductive System

by puberty, ________ to ________ primary oocyte

300,000 to 400,000

the ovaries contain _______ oogonia

5 million

joined the prostatic urethra within the prostate gland

Ejaculatory duct

secretes testosterone


Seminiferous tubules