shlime ussy

Stages of Oogenesis (1st stage - before birth)

Stages of Oogenesis (1st stage - before birth)

Starts with Oogonia (before birth) Primary follicles contain a primary oocyte Matures and then Graafian Follicle contains the secondary oocyte Ovulation occurs and the follicle turns into the Corpus Luteum (secretes hormones for pregnancy)

Structure and functions of the Fallopian tubes (including fimbriae)

Receives ovulated oocyte Fimbriae - finger-like projections at distal ends - receives oocyte Site for fertilization Not attached to the ovary Cilia and peristalsis in the fallopian tube slowly move the oocyte toward the uterus (3-4) days

Structure and functions of the uterus including 3 uterine wall layers

Endometrium, Myometrium, Perimetrium

Endometrium

Inner layer. Thickens to allow implantation of a fertilized egg. (If sheds, no implantation)

Myometrium

Muscle Contracts to give birth (involuntary and smooth) Causes cramps when on period

Perimetrium

Outer layer. Smooth, slick, and reduces friction with other organs

Structure and function of the vagina

Structure - posterior to the bladder, anterior to the rectum Function - birth canal, receives the penis during sexual intercourse Hemen - partially closes vagina until it is ruptured

External Genitalia (including openings)

1.) Urethral opening 2.) Vaginal opening 3 & 4 Paraurethral Gland parallel to the prostate 5 & 6 Greater vestibular glands correspond to the bulbourethral gland 7.) Anal Opening

Anterior pituitary hormones (brain)

Follicle Stimulating Hormone (FSH) Luteinizing Hormone (LH) talks to ovaries

Follicle Stimulating Hormone (FSH)

matures the primary follicle and primary oocyte into the Graafian follicle and secondary oocyte

Luteinizing Hormone (LH)

ruptures the Graafian follicle (ovulation) and then turns in the corpus lutetium

Ovarian cycle (Estrogen & Progesterone)

Estrogen - tells the uterus to get thick Progesterone - stay think in order to maintain pregnancy

Uterine Cycle

Receives, Retains, and Nourishes the egg

What happens if there's not enough progesterone?

The wall does not stay thick and the pregnancy is lost