CDEV 3-4

the period of development conception and the implantation of the embryo

a stage within the germinal period of prenatal development in which the zygote has the form of a sphere of cells surrounding a cavity of fluid

the platelike inner part of the blastocyst that differentiates into the ectoderm, mesoderm, and endoderm of the embroyo

the outer part of the blastocyst from which the amniotic sac, placenta, and umbilical cord develop

a tube that connects the fetus to the placenta

an organ connected to the uterine wall and to the fetus by the umbilical cord. the placenta serves as a filter between mother and fetus for the exchange of nutrients and wastes.

the stage of prenatal development that lasts from implantation through the eight week of pregnancy it is characterized by the development of the major organ systems.

from head to tail

from the inner part of the body outward

the outermost cell layer of the newly formed embryo from which the skin and nervous system develop

a structure that forms in the ectoderm during the embryonic stage, from which the skin and nervous system develop.

the inner layer of the embryo from which the lungs and digestive system develop

the centeral layer of the embryo from which the bones and muscles develop

male sex hormones

the sac containing the fetus

fluid within the amniotic sac that suspends and protects the fetus

the stage of development that lasts from the beginning of the ninth week of pregnancy through birth. it is characterized by gains in size and weight and by maturation of the organ system.

the delivery of dead fetus

environmental agents that can damage the embryo or the fetus

in this usage, a period during which an embryo or fetus is particularly vulnerable to a certain teratogen.

a sexually transmitted infection that, in advanced stages, can attack major organ systems.

present at birth, resulting from the prenatal environment

a viral infection that can cause retardation and heart disease in the embryo. also called german measles

a life threatening disease that can afflci pregnant women. it is characterized by high blood pressure.

born before the full term of gestation. also referred to as preterm.

a condition in which antibodies produced by the mother are transmitted to the child, possibly causing brain damage or death

a sedative used in the 1960s that has been linked to birth defects, especially deformed or absent limbs

a hormone used to maintain pregnancy that can sauce masculinization of the fetus

diethylstilbestrol, an estrogen that has been linked to cancer in the reproductive organs of childeren of women who used the homone when pregnant.

a cluster of symptoms shown by children of women who drank heavily during pregnancy including characteristic facia features and mental retardation.

use of an electronic sensing device to track the fetus's vital signs during childbirth

an intrument that fits around the baby's head to pull the baby through the birht canal

an instrument that uses suction to pull the baby through the birth canal

initial movement of the baby's head into the birth canal

an incision between the birth canal and anus that widens the vaginal opening to prevent random tearing during childbirth

a trained person who helps women in childbirth

deliver of the neonate through an incision in the mother's abdomen

lack of oxygen

less oxygen than needed

a position in which the baby enters the birth canal buttocks first.

boran at or before completion of 37 weeks of gestation

descriptive of full term neonates who are usually small for their age

fine, downy hair on the body of the neonate especially preterm babies.

an oily white substance that coats the skin of the neonate especially preterm babies.

breathing problems, including weak and irregular breathing to which preterm babies are prone.

a heated, protective container in which premature infants are kept.

the period following childbirth

severe, prolonged depression after delivery that is characterized by feelings of sadness, apathy, and worthlessness

the formation of feelings of attachment between caregiver and child

a measure of a newborn's health that assesses the appearance pulse grimace activity level and respiratory effort

the automatic adjustments made by the lenses of the eyes to focus on objects

the inward movemnt of the eyes to focus on a nearby object

the height of sound waves. the greater the amplitude of sound waves the louder the saound is

the highness or lowness of a sound, as determined by the frequency of sound waves

an artifical nipple teething ring or similar device that when sucked soothes babies

the death while sleeping of apparently healthy babies who stop breathing for unknown reasons

a part of the brainstem that regulates vital and automatic functions such as breathing and the sleep-wae cycle