antrum
fluid-filled cavity within the follicle
atresia
during folliculogenesis, the degeneration and reabsorption of ovarian follicles that are not ultimately ovulated
cervix
narrow neck of the uterus whose mucus protects the uterus from foreign materials. The cervix also dilates during childbirth to allow passage of the baby
clitoris
small organ containing tightly packed nerves that provides stimulation during intercourse
dilation
first stage of childbirth when the cervix softens and opens
estrogen
hormone responsible for many functions in the female body, including the promotion of the growth of the endometrial lining, inhibition of bone resorption, decreasing the risk of heart disease, and affecting fluid/electrolyte levels
fallopian tube
hollow tube between the ovary and the uterus that conducts eggs to the uterus during a woman's menstrual cycle
follicle
ovarian structure that houses the oocyte, surrounded by one or more layers of cells, inside the ovary
folliculogenesis
formation of the ovarian follicle
granulosa cell
cell that makes up the follicle envelope
human chorionic gonadotropin (HCG)
hormone that maintains the corpus luteum and results in increased levels of progesterone during the first trimester of pregnancy
labium (plural, labia)
flap of skin that protects the clitoris, the vagina, and the opening of the urethra; part of the external genitalia
lactation
secretion of milk from the mammary tissue of the breast
mammary gland
exocrine gland that produces milk in response to hormones
menarche
onset of the first menstrual cycle
menopause
time when ovulation and menstruation cease and fertility ends
oocyte
cell that will give rise to a mature ovum and three polar bodies via meiosis
oogenesis
development of the eggs, or ova (singular, ovum)
ovarian cycle
one of the two cycles that regulates a woman's fertility. It includes the events in the ovary that produce an egg each month
ovary
organ that produces and releases eggs and estrogen and progesterone
ovulation
release of the egg from the ovary
oxytocin
hormone that promotes uterine contractions during childbirth and causes milk ejection during breastfeeding
polar body
haploid (1n) cell produced during meiotic divisions of an oocyte that cannot be fertilized
progesterone
hormone that prepares the uterus for implantation of a zygote
prolactin
hormone that stimulates milk production hormone that stimulates milk production
relaxin
hormone that causes changes to the cardiovascular system during the first trimester of pregnancy, initiates labor, and facilitates delivery of the baby by dilating the cervix and increasing flexibility of ligaments and pubic bones
uterine cycle
sequence of changes in the uterine lining (endometrium) in response to ovarian hormones. Phases include menstruation, rebuilding of the endometrium, and preparation for implantation of an embryo.
uterus
organ where gestation occurs
vagina
tract in the female reproductive system that extends from the opening on the outside of the body to the cervix
zona pellucida
noncellular, protective layer that immediately surrounds the plasma membrane of an oocyte and helps with fertilization