Chapter 12 Flashcards
Abdominopelvic cavity
Hollow space in the abdomen and pelvis that contains the internal female genitalia
External genitalia
Structures on the outside of the female body that include the mons pubis, labiamajora, labia minors, clitoris, vaginal intro it’s, Bartholin glands, urethral glands, and Skene glands.
Female genital system
Body system that consists of the structures of the internal and external genitalia.
It’s functions are to secrete female hormones, develop female secondary sexual characteristics, produce ova, menstruate, conceive and bear children, and produce milk to feed infants.
Genitalia
Internal and external organs and structures of the female genital and reproductive system.
Also known as the genital organs.
Genitourinary system
The combined female genital and reproductive body system and the urinary body system. These two body systems are in close proximity to each other and are often considered together.
Also known as the urogenital system.
Internal genitalia
Structures in the abdominopelvic cavity that include the ovaries, uterine tubes, uterus and vagina.
Mammmary glands
Part of the female reproductive system.
Also known as the breasts
Reproductive system
The function of the female genital system is conceiving and bearing children and producing milk to nourish infants.
Adnexa
Accessory organs (the ovaries and uterine tubes) connected to the main organ ( the uterus)
Follicle
Small area in the ovary that holds locates before puberty and maturing ova after puberty. A follicle ruptures during the menstrual cycle, releasing an ovum, and then becomes the corpus luteum.
Gonads
The sex glands in a female, which are the ovaries.
Oocyte
Immature egg in the follicle of the ovary
Ovary
Small, egg-shaped gland near the distal end of the uterine tube. The ovary is held in place by the broad ligament and other ligaments.
The follicles of the ovary secrete estradiol. The corpus luteum of the ovary secretes estradiol and progesterone.
The cells around the follicles secrete testosterone. The ovary is a gonad.
Ovum
A mature egg within a follicle in the ovary. It is released during ovulation in the menstrual cycle. The plural is ova.
Cilia
Tiny hairs within the uterine tube. they beat in waves to propel an ovum toward the uterus.
Fimbriae
Finger-like projections at the distal end of the uterine tube. They create currents that carry the ovum into the lumen of the uterine tube.
Peristalsis
Smooth wave-like muscle contractions of the uterine tube that move the ovum toward the uterus.
Uterine tube
Narrow tube that is connected at its proximal end to the uterus.
The distal end is funnel shaped; it is open to the pelvic cavity and is not directly connected to the ovary. It has a long central opening or lumen.
Also known as an oviduct.
Formerly known as the Fallopian tube
Anteflexion
Normal position of the uterus in which the superior portion is tipped anteriorly on top of the bladder.
Cervix
Narrow, most inferior part of the uterus. It contains the cervical canal.
Part of the cervical protrudes into the vagina. The cervical os is the small central opening in the cervix.
Cul-de-sac
Small pouch in the broad ligament that is between the uterus and rectum.
Fundus
Rounded top of the uterus.
Endometrium
Innermost layer of the uterus that lines the intrauterine cavity. It is a mucous membrane that contains many glands. It thickens and then is shed during the menstrual cycle.
Intrauterine cavity
Hollow area within the uterus. It is lined with endometrium.
Myometrium
Smooth muscle layer of the uterine wall. It contracts during menstruation to expel the endometrial .inning and during labor and the delivery of a baby.
Perimetrium
Serous membrane that is the outer layer of the uterus. It is part of the peritoneum that lines the abdominopelvic cavity.
Uterus
Internal female organ of menstruation and pregnancy. Also known as the womb.
The uterus is held in place by the broad ligament and other ligaments. The parts of the uterus include the fundus. Cervix, perimetrium, myometrium, endometrium, and intrauterine cavity.
The normal position of the uterus is anteflexion, tipped anteriorly.
Fornix
Area of the vaginal canal that is behind and around the cervix. Also known as the vaginal vault
Hymen
Elastic membrane that, if present, partially or completely covers the end of the vaginal canal.
Vagina
Short, tubular structure connected at its superior end to the cervix and at its inferior end to the outside of the body.
It contains the vaginal canal and the vaginal introitus, the opening to the outside of the body.
BUS
Bartholin glands, urethral glands, and Skene glands near the vaginal introitus. They secrete mucus during sexual arousal
Clitoris
Organ of sexual response in the female that enlarges with blood and becomes firm
Labia
Two sets of lip-shaped structures that partially cover the urethral meatus and the vaginal introitus. The labia major, the thicker, outermost lips, are covered with pubic hair. The labia minors, the smooth, thin, inner lips, are beneath the labia Majora
Mons pubis
Rounded, fatty pad of tissue covered with pubic hair that lies on top of the pubis (anterior hip bone)
Perineum
Area of skin between the vulva and the anus
Vaginal introitus
Opening of the vagina to the outside of the body.
Vulva
Area that includes the external genitalia as well as the mons pubis (but not the mammary glands)
Areola
Pigmented area around the nipple of the breast
Lactiferous lobules
Site of milk production in the mammary glands. The milk flows through the lactiferous ducts to the nipple.
Mammary glands
Two structures that contain adipose (fatty) tissue and lactiferous lobules. The nipple is the projection point of the Breast where the lactiferous ducts converge. The breasts produce milk to nourish the baby after birth. Also known as the breasts.
Estradiol
Most abundant and biologically active of the female hormones. During puberty, it causes the development of the female sexual characteristics.
It is secreted by the follicles of the ovary and the corpus luteum (after ovulation). It causes the endometrium to thicken during the menstrual cycle. During pregnancy, estradiol is also secreted by the placenta.
Follicle-stimulating hormone (FSH)
Hormone secreted by the anterior pituitary gland in the brain. It stimulates a follicle in the ovary to enlarge and produce a mature ovum. FSH also stimulates the follicles to secrete estradiol.
Gamete
An ovum or spermatozoon. It has 23 chromosomes instead of the usual 46 chromosomes found in other cells in the body.
Luteinizing hormone (LH)
Hormone secreted by the anterior pituitary gland in the brain. It stimulates a follicle in the ovary to rupture and release a mature ovum.
LH also stimulates the corpus luteum to secrete estradiol and progesterone.
Oogenesis
Production of a mature ovum from an oocyte through the processes of mitosis and the meiosis.
Progesterone
Hormone secreted by the corpus luteum of the ovary after ovulation.
It causes the uterine lining to thicken during the menstrual cycle. During pregnancy, it is secreted by the placenta.
Puberty
Rapid physical changes that the female body undergoes to reach sexual maturity with the development of the female secondary sexual characteristics.
This is stimulated by hormones from the anterior pituitary gland and the ovary. This period of time is known as adolescence.
Testosterone
Male hormone secreted by cells around the follicles in the ovary. It plays a role in the female sexual drive.
Female secondary sexual characteristics
Physical features that develop during puberty because of stimulation by hormones. They include enlargement of the external genitalia (genital area and breasts), the growth of body hair in axillae and genital area, and widening of the pelvis
Gamete
A mature ovum that contains 23 chromosomes
Meiosis
Begins in the fetal ovary before birth. It resumes during puberty to produce a mature ovum with 23 chromosomes and two or three non functioning polar bodies.
Mitosis
Process in which a cell with 46 chromosomes divides to produce two identical cells, each with 46 chromosomes. It is the first step in oogenesis, and it occurs in the fetal ovary before birth.
Oocyte
Immature ovum in the fetal ovary before birth
Oogenesis
Process of producing a mature ovum. It involves both meiosis and mitosis.
Corpus luteum
Remnants of a ruptured follicle in the ovary. The corpus luteum secretes estradiol and progesterone during the menstrual cycle.
If the ovum is fertilized, the placenta begins to secrete these hormones, and the corpus luteum becomes white scar tissue.
Ischemic phase
Days 27-28 of the menstrual cycle. the corpus luteum degenerates into white scar tissue and stops producing estradiol and progesterone. The endometrium sloughs off, and menstruation begins.
Menarche
The first cycle of menstruation at the onset of puberty. This is the first menstrual period or menses.
Menstrual cycle
A 28-day cycle that consists of the menstrual phase, proliferative phase (followed by ovulation), secretory phase, and ischemic phase.
Menstrual phase
Days 1-6 of the menstrual cycle. The endometrial lining of the uterus is shed.
Menstruation
Process in which the endometrium of the uterus is shed each month, causing a flow of blood and tissue through the vagina.
Under the influence of estradiol, the endometrium thickens in preparation to receive a fertilized ovum.
If the ovum is not fertilized, the endometrium is shed to begin another menstrual cycle.
Ovulation
Day 14 of the menstrual cycle. Luteinizing hormone from the anterior pituitary gland causes the ovarian follicle to rupture, releasing the mature ovum. The basal (baseline) body temperature rises during ovulation.
Proliferative phase
Days 7-13 of the menstrual cycle. Follicle-stimulating hormone stimulates the follicle to secrete estradiol.
A follicle produces a mature ovum, and the thickness of the endometrium increases (proliferates)
Secretory phase
Days 15-26 of the menstrual cycle. A ruptured follicle becomes the corpus luteum and secretes estradiol and progesterone. The thickness of the endometrium increases.
Amnion
Membrane sac that holds the amniotic fluid that surrounds and cushions the developing embryo and fetus. AKA bag of waters
Antepartum
From the mother’s standpoint, the period of time from conception until labor and delivery with the birth of the baby.
Chorion
Outer layer of a zygote that sends out finger-like projections (villi) into the endometrium to bring nutrients and oxygen to the embryo.
It produces human chorionic gonadotropin. It later develops into the placenta.
Embryo
A fertilized ovum (zygote) from 4 days after fertilization through 8 weeks of gestation
Fertilization
The act of a spermatozoon uniting with an ovum. Also known as conception.
Fetus
An embryo becomes a fetus beginning at 9 weeks of gestation. It is called a fetus until the moment of birth.
Fraternal twins
The ovary releases two ova that are both fertilized but by different spermatozoa
Gestation
Period of time from the moment of conception until birth, approximately 9 months (38-42 weeks), divide into three trimesters.
Human Chorionic gonadotropin (HCG)
Hormone secreted by the chorion of the zygote. It stimulates the corpus luteum of the ovary to keep producing estradiol and progesterone to maintain the endometrium and prevent menstruation during the pregnancy.
Identical twins
An already developing zygote spits in two. This creates two separate but identical zygotes.
Placenta
Large, pancake-like structure that develops from the chorion. It provides nutrients and oxygen to the developing fetus and removes carbon dioxide and waste products.
It secretes estradiol and progesterone to maintain the endometrium during pregnancy.
Pregnancy
State of being with child. It begins at the moment of conception and ends with delivery of the newborn.
Prenatal period
From the fetus’s standpoint, the period of time from conception to birth
Products of conception
The fetus, placenta, and all fluids and tissue in the pregnant uterus.
Trimester
A period of 3 months. The time of gestation is divided into three trimesters.
Umbilical cord
rubbery, flexible cord that connects the placenta to the umbilicus (navel) of the fetus. It contains two arteries and one vein.
Zygote
Cell that is the union of spermatozoon and an ovum. A zygote has 46 chromosomes.
Braxton Hicks contractions
Irregular uterine contractions during the last trimester. These strengthen the uterine muscle in preparation for labor. Also known as false labor
Cephalic presentation
Position of the fetus in which the head is the presenting part that is first to go through the birth canal.
Vertex presentation is a type of cephalic presentation in which the top of the head is the presenting part.
Cervical dilation
Widening of the cervical os from 0 to 5 cm during the first stage of labor
Cervical Ripening
Softening of the cervix as collagen fibers in its wall break down prior to the onset of labor
Crowning
The top of the fetal head (crown) is visible at the vaginal introitus during the second stage of labor.
Effacement
Thinning of the cervical wall, measured as a percentage from 0 percent to 100 percent, during the first stage labor.
Engagement
The fetal head drops into position within the mother’s pelvis in anticipation of birth. Also known as “lightening
Involution
Process by which the uterus gradually returns to a normal size after childbirth
Iochia
Small amounts of blood, tissue, and fluid that flow from the uterus after childbirth
Oxytocin
Hormone produced by the uterus and by the posterior pituitary gland in the brain.
It stimulates the uterus to contract and begin labor. After delivery, it stimulates the uterus to contract to stop bleeding.
It stimulates the let-down reflex to get milk flowing for breastfeeding.
Parturition
The process of labor and delivery. There are thee stages; dilation and effacement of the cervix, delivery of the newborn, and delivery of the placenta.
Placenta
Delivered during the third stage of labor. Also known as the “afterbirth.”
Postnatal period
From the newborns’ standpoint, the period of time after birht
Postpartum
From the mother’s standpoint, the period of time after delivery
Rupture of the membranes (ROM)
Rupture of the amniotic sac during the first stage of labor, with the release of amniotic fluid that flows out of the vagina.
Acrocyanosis
Temporary bluish coloration of the skin of the newborn’s face, hands, and feet.
Fontanels
Soft areas on the head between the bones of the cranium in a newborn.
In these areas, the brain is only covered with fibrous connective tissue.
The largest is the anterior fontanel on the top of the head. There is a smaller posterior fontanel on the back of the head.
Fontanels allow the brain to grow before the cranial fuse together. Also known as soft spots.
Meconium
First bowel movement passed by a newborn. It is a greenish-black, thick, tar-like substance.
Molding
Temporary, elongated reshaping of the fetal cranium as it passes through the mother’s bony pelvis.
Neonate
A newborn from the time of birth until 1 year of age. A term neonate is born between 38 and 42 weeks’ gestational age.
A preterm or premature neonate is born between 28 and 37 weeks’ gestational age.
Vernix caseosa
Thick, white, cheesy substance that covers some of the skin of the fetus and helps protect it from bacteria present in the mother’s vagina during birth.
Colostrum
First milk from the breasts. It is a thick, yellow sigh fluid that is rich in nutrients and contains maternal antibodies to give the newborn passive immunity to common diseases.
Lactation
Production of colostrum and then breast milk by the mammary glands after childbirth when stimulated by prolactin from the posterior pituitary gland.
Let-down reflex
Occurs when the newborn cries or sucks. Oxytocin from the posterior pituitary gland causes the lactiferous lobules to contract and expel milk.
Anovulation
Failure of the ovaries to release a mature ovum at the time of ovulation, although the menstrual cycle is Normal. this results in infertility.
Treatment; Hormone drug to stimulate ovulation
Ovarian cancer
Cancerous tumor of an ovary, This malignancy often does not cause symptoms until it is quite large and has already metastasized.
Polycystic ovary Syndrome
The ovaries contain multiple cysts. When a follicle enlarges and matures but fails to rupture and release an ovum, it then becomes a cyst. With each menstrual cycle, the cysts enlarge, causing pain.
Happens a month after month until the ovaries are filled with cysts.
This syndrome is associated with amenorrhea or menometrorrhagia, infertility, obesity, and insulin resistance syndrome with the development of type 2 diabetes mellitus.
Salpingitis
Inflammation or infection of the uterine tube. It is due to endometriosis or pelvic inflammatory disease that narrows or blocks the lumen of the tube.
Endometrial cancer
Cancerous tumor of the endometrium of the uterus. The earliest sign is abnormal bleeding. Also known as uterine cancer.
Endometriosis
Endometrial tissue in abnormal places outside of the uterus. The exact cause is unknown, but it tends to run in families. The endometrium separates from the uterine wall during each menstrual cycle, but then the blood and tissue go in an abnormal retrograde direction up into the uterine tubes and other structures, and implant there.
Leiomyoma
Benign, fibrous tumor in the smooth muscle of the myometrium.
It can be small or as large as a soccer ball. Several tumors are leiomyomata; also known as uterine fibroids.
Leiomyosarcoma
Cancerous tumor of the smooth muscle of the myometrium
Myometritis
Inflammation or infection of the myometrium. It is associated with pelvic inflammatory disease.
Pyometritis is a bacterial infection of the myometrium that creates pus in the intrauterine cavity.
Pelvic inflammatory disease (PID)
Descent of the uterus from its normal position. This is caused by stretching of the ligaments that support the uterus within the abdominopelvic cavity and/or weakness in the muscles of the floor of the pelvic cavity.
Abnormal uterine bleeding (AUB)
Sporadic menstrual bleeding without a true menstrual period. It is related to anovulation. The endometrium sloughs off from time to time, but never reaches a full thickness because there is no ovulation and no corpus luteum to secrete progesterone. Also known as dysfunctional uterine bleeding (DUB)
Amenorrhea
Absence of monthly menstrual periods. It is caused by a hormone imbalance, thyroid disease, or a tumor of the uterus or ovary.
Poor nutrition, stress, chronic disease, intense exercise, or the psychiatric illness of anorexia nervosa can also cause amenorrhea.
Dysmenorrhea
Painful menstruation. During mensuration, the uterus releases prostaglandin to constrict blood vessels in the uterine wall and prevent excessive bleeding.
A high level of prostaglandin causes cramping and temporary ischemia of the myometrium, both of which cause pain.
Menopause
Normal cessation of menstrual periods, occurring around middle age. Perimenopause is the time around menopause when menstrual flow is lighter. Menopause is also known as climacteric or “Change of Life”
Menorrhagia
A menstrual period with excessively heavy flow or a menstrual period that lasts longer than 7 days. It is caused by a hormone imbalance, uterine fibroids, or endometriosis. Menometrorrhagia is excessively heavy menstrual flow during menstruation or at other times of the month.
Metrorrhagia
Excessively heavy bleeding at a time other than menstruation. This can be caused by a tubal pregnancy or uterine cancer. Heavy uterine bleeding of any type can cause anemia.
Oligomenorrhea
A menstrual period with very light flow or infrequent menstrual cycles in a woman who previously had normal menstruation. Caused by a hormone imbalance.