A type of cell division

Produces gametes (sex cells)

Takes place in the testes of males and ovaries of females

Reduction Division chromosome # from 46 to 23

Sertoli Cells

Support, nourish, and regulate the development of cells undergoing spermatogenesis.

Located in the seminiferous tubules

Contain cells that produce sperm

Also transports sperm

Highly coiled duct within the testes

The production of sperm

Gonadotropin Realeasing Hormone

Stimulates the anterior pituitary to produce the two gonadotropic hormones FSH & LH

FSH

(in males)

Follicle Stimulating Hormone

Promotes spermatogenesis

LH

(in males)

Luteinizing Hormone

Also called the interstitial cell stimulating hormone

Promotes testosterone production by the interstitial cells

FSH & LH

(in females)

Cause elevated estrogen and progesterone production by the ovaries

Also called Graafian/Matured Follicle

Follicle within the ovaries that houses a developing ovum(egg)

Primary follicle --> Secondary Follicle --> Vesicular Follicle

The production of an ovum

Follicle that has lost it's egg.

-If implantation DOES NOT occur, will degenerate after 10 days

-If implantation DOES occur, secretes hormones for about 6 months

Post-ovulation

Secretes progesterone and some estrogen

LH levels decline and corpus luteum begins to degenerate. At the end of the phase corpus luteum degenerates and menstration occurs.

Used for contraception (pregnancy prevention)

Natural-abstinence, withdrawl method

Nonprescrip-condoms, spermicides

Prescrip Hormonal-ring, patch, pill, shot

Prescrip Barrier-Diaphragm, Cervical Cap

Surgical-Vasectomy

Sexually transmitted disease

Sexually transmitted infection

Caused by a variety of organisms

Humans cannot develop effective immunity to any STI

Treatment cannot eliminate the virus from the body

Ex. AIDS, HPV, Genital Herpes

Are curable with antibiotics

Ex. Chlamydia, Gonorrhea, Syphilis

Males or Females producing gametes (sex cells)

Head- contains necleus & DNA

Midpiece- contains mitochondria

Tail- provides mobility (flagellum)

46

Diploid

23

Haploid

Produced by the corpus luteum

Thickens the endometrium two or three times normal size

exerts negative feedback over LH secretion

Menstrual Cycle

(pre ovulation)

Follicular phase of the ovary

Several follicles begin developing in the ovary

LH surge causes ovulation

At the end of phase ovulation begins

Needed for lactation to begin

After birth, prolactin is secreted from anterior pituitary

Produced the first few days after birth

A milky fluid rich in proteins and antibodies