NURS 5032 - UNIT 1 - AUXILLARY STRUCTURES EXAM
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
VERIFIED
What are the 3 types of functions of the placenta?
metabolic, transfer of substances between mother and fetus, endocrine
What are the metabolic functions of the placenta?
produces glycogen, cholesterol, and fatty acids
What substances transfer between mother and baby through the placenta?
gas exchange, nutrient transfer, waste removal, antibody transfer, hormone transfer
What hormone does the placenta produce in first 6-8 weeks?
HCG (human chorionic gonadotropin)
What does HCG do?
activates the secretion of estrogen and progesterone from the corpus luteum, causes
fetal testes to secrete testosterone
Estrogen and progesterone are eventually secreted by the _______ during
pregnancy.
placenta
What are the functions of estrogen and progesterone in pregnancy?
enlargement and changes in the uterus, development and enlargement of breasts,
prevents response to fetal antigens, timing of labor
What is the function of human chorionic somatomammotropin?
, normal nutrition and growth of the fetus, maternal breast development for lactation,
decreases maternal insulin sensitivity and utilization of glucose to make more available
for fetal growth
Where does exchange of substances occur in the placenta?
intervillous space
Do maternal and fetal bloods mix within the placenta?
no
How many veins and arteries are in the umbilical cord?
2 arteries, 1 vein
What is the umbilical cord cushioned by?
Wharton's jelly
How does maternal blood exchange substances in the intervillous space?
maternal blood flows over the chorionic villi in the intervillous spaces
How is each chorionic villus supplied?
fetal villus artery carries deoxygenated blood and waste products from the fetus, fetal
villus vein returns oxygenated blood and nutrients to the fetus
What is normal insertion of the umbilical cord within the placenta?
central placement, with fetal vessels branching over the top of the surface in all
directions
What are the 2 fetal membranes?
amnion (inner) and chorion (outer)
What is the function of the fetal membranes?
hold the amniotic fluid
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
VERIFIED
What are the 3 types of functions of the placenta?
metabolic, transfer of substances between mother and fetus, endocrine
What are the metabolic functions of the placenta?
produces glycogen, cholesterol, and fatty acids
What substances transfer between mother and baby through the placenta?
gas exchange, nutrient transfer, waste removal, antibody transfer, hormone transfer
What hormone does the placenta produce in first 6-8 weeks?
HCG (human chorionic gonadotropin)
What does HCG do?
activates the secretion of estrogen and progesterone from the corpus luteum, causes
fetal testes to secrete testosterone
Estrogen and progesterone are eventually secreted by the _______ during
pregnancy.
placenta
What are the functions of estrogen and progesterone in pregnancy?
enlargement and changes in the uterus, development and enlargement of breasts,
prevents response to fetal antigens, timing of labor
What is the function of human chorionic somatomammotropin?
, normal nutrition and growth of the fetus, maternal breast development for lactation,
decreases maternal insulin sensitivity and utilization of glucose to make more available
for fetal growth
Where does exchange of substances occur in the placenta?
intervillous space
Do maternal and fetal bloods mix within the placenta?
no
How many veins and arteries are in the umbilical cord?
2 arteries, 1 vein
What is the umbilical cord cushioned by?
Wharton's jelly
How does maternal blood exchange substances in the intervillous space?
maternal blood flows over the chorionic villi in the intervillous spaces
How is each chorionic villus supplied?
fetal villus artery carries deoxygenated blood and waste products from the fetus, fetal
villus vein returns oxygenated blood and nutrients to the fetus
What is normal insertion of the umbilical cord within the placenta?
central placement, with fetal vessels branching over the top of the surface in all
directions
What are the 2 fetal membranes?
amnion (inner) and chorion (outer)
What is the function of the fetal membranes?
hold the amniotic fluid
