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87 Cards in this Set
- Front
- Back
site of fetal development
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uterus
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copulatory canal
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vagina
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egg typically fertilized here
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fallopian (unterine) tube
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becomes erect during sexual excitement, made of erectile tissue, sensitive to the touch
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clitoris |
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duct extending suprolaterally from the uterus
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fallopian (unterine) tube
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partially closes the vaginal canal; a membrane
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hymen
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produces oocytes, estrogens and progesterone
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ovaries
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fingerlike ends of the uterine tube
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fimbria
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name the 3 layers of the uterine wall
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endometrium
myometrium perimetrium |
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which layer of the uterine wall contracts during birth
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myometrium
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female gametes
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ova (one per month)
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shape and location of ovaries
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paired almond shaped, lies in the true pelvis and help in place by mesentry of the ovary
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broad ligament of the ovaries
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large fold of peritoneum that hangs from the the uterus and uterine tubes
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suspensory ligament of the ovaries
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lateral continuation of the broad ligament and attaches ovary to lateral pelvic wall
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oocytes
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developing gametes
immature egg cells going through meiosis |
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tunica albuginea
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fibrous capsule that surrounds the ovary, covered by simple cuboidal epithelia called germinal epithelia
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ovarian cortex
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houses developing gametes called oocytes
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ovarian medulla
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loose connective tissue containing largest blood vessels, nerves and lymphatic vessels (enters through the hilum)
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main substance of the ovary is divided into 2 portions. Name them.
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ovarian cortex
ovarian medulla |
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oogenesis
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ovum production
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ovum
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female sperm/egg
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location of oogenesis
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takes place inside the ovarian follicles in the ovaries as part of the ovarian cycle
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oogonia
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stem cells, complete miotic divisions before birth
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ovarian cycle
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menstrual cycle as it relates to the ovary and is composed of 3 phases
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3 phases of the ovarian cycle
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1) follicular
2) ovulation 3) luteal phase |
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ovarian cycles start when?
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at puberty under the influence of estrogen
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primordial follicle
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consists of an oocyte surrounded by a single layer of flat supportive cells called follicular cells
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follicular phase
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dormant stage, ready to develop
at the start of each ovarian cycle, 6-12 primordial follicles start to grow initiating it and lasting for 2 weeks |
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primary follicle
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primordial follicle starts to grow, cells become cuboidal and oocyte grows larger
day 3-6 |
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structure of primary follicle
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double layer of theca cells
enlargement is due to estrogen more atresia |
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secondary follicle
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liquor follicle appears
theca more developed granulose cells produce estrogen under influence of FSH zona pellucida visible day 8-10 |
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theca
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connective tissue that condenses around the exterior of the follicle
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zona pellucida
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glycoprotein coat, a protective shell that a sperm must penetrate to fertilize the oocyte
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Phases 2 of Oogenesis
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ovulation
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ovulation occurs when
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occurs halfway through each ovarian cycle
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ovulation
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oocyte exits the ovaries and is swept into the uterine tube, the signal to begin is a sudden release of large quantities of LH
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tertiary follicle
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day 11-14
ready for ovulation theca is well developed granulosa cells are secreting estrogen first meiosis is complete |
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function of ovulation
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oocyte and follicular cells are shed into the abdominal cavity and collected by the fimbria
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corpus luteum
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endocrine gland in the luteal phase, secretes estrogen and progesterone
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corpus luteum degenerates into
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corpus albicans when there is no implantation
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unterine cycle
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menstrual cycle as it relates to the endometrium and consists of 3 phases
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3 phases of the uterine cycle
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menstrual
proliferative secretory |
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menstrual phase
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day 1-5
functional layer is shed |
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proliferative phase
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day 6-14
functional layer rebuilds |
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secretory
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day 15-28
endometrium prepares for implantation of the embryo |
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menstrual cycle
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day 1: first day of menses
day 7-14: follicle develops, secretes estrogen day 14: ovulation day 14-28: luteal phase |
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luteal phase
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corpus luteum forms from follicle, secretes progesterone, eventually becomes corpus albicans
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uterine tube
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receives the ovulated oocyte and are the site for fertilization
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uterine tube is also called
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fallopian tube
oviduct salpinx |
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infundibulum of the uterine tube
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opens into the peritoneal cavity
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uterine ampulla
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forms half the lenght of the uterine tube, place of fertilization
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isthmus
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medial 3rd portion of the tube
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histology of the endometrium
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ciliated and non-ciliated simple columnar epithelia
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purpose of cilia in the uterine tubes
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ciliary movement, along with peristaltic contractions move the ova
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endometrium
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mucosal lining of the uterine cavity, in 2 layers
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name the 2 layers of the endometrium
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functional and basal
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myometrium
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bulky middle layer consisting of bundles of smooth muscle that contract during childbirth to expel the baby
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perimetrium
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incomplete
visceral peritoneum |
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blood supply of the uterus
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uterine arteries from the internal iliac
ovarian arteries from the abdominal aorta |
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uterus consists of 4 areas
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fundus
body isthmus cervix |
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fundus
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rounded region superior to the entrance of the uterine tubes
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body
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major portion of the uterus
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isthmus
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narrowed region inferior to the body
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cervix
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fibrous ring that keeps the uterus closed during pregnancy
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functional layer of endometrium
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sheds during menses
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basal layer of endometrium
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permanent layer deep to the functionalis
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function of the uterus
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protection of the embryo/fetus
nutritional support waste removal ejection of fetus at birth |
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vagina
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fibromuscular tube
receptacle for intercourse passageway for menstrual products birth canal made of 3 layers: outer adventia, muscularis and inner mucosa |
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fornix
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pocket surrounding the uterine cervix
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labia majora
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female counterpart to the scrotum, encloses the labia minora
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labia minora
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encloses the vestibule which protects the external openings of the urethra and vagina
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fertilization
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acromosal reaction
cortical reaction fertilized zygote enters the uterus at day 4 |
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acromosal reaction
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enzymes in the acromosome dissolve part of the zona pellucida
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cortical receptors
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destroys the receptors for further sperm
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when does fertilization occur
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when the chromosomes from the male and female gametes come together within the ovum
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implantation occurs when
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day 6
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blastoclast stage
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fertilized egg before implantation
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trophoblast
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layer that will provide the embryo with nourishment
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placenta
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formed from trophoblasts and endometrium
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function of the placenta
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becomes an endocrine gland
provides nutrition and waste removal |
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parturition
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the act of giving birth
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gestation
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280 days, 266 days after last menstruation
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3 stages of parturition
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dilation: 1st contraction to 10cm
expulsion: from dilation to delivery placental: delivery of the placenta |
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mammary gland
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modified sweat gland
produces milk |
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structure of the mammary gland
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15-20 separate lobes separated by suspensory ligaments each containing several secretory lobules
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lactiferous ducts
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leaving the lobules, converges into 15-20 lactiferous sinuses
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lactiferous sinuses
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milk is stored here until released at the tip of the nipple, influenced by oxytocin
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