and Answers
_______ is the tissue layer that changes and blocks
_____ at the moment of fertilization - -zona what is wharton's jelly? - -surrounds the
pellucida; polyspermy vessels to prevent compression
______ is the tissue layer where the sperm has the foramen ovale _____ - -connects the atria
_____ to break down hyaluronic acid - -corona
radiata; hyaluronidase
the ductus venosis ____ - -bypasses the liver
fertilization occurs at the _____ - -ampulla ( or
the isthmus) the ductus arteriosus is ____ - -between the
aorta and pulmonary circulation
the placenta facilitates what? - -nutrient and
gas exchange pre-embryonic stage is defined as _____ - -
conception to day 14
the ____ is the functional part of the placenta that
secretes ___ - -syncytium; hormones (it is the embryonic stage is defined as ____ - -day 15 to
outer layer) 8 weeks
the placenta begins to develop at ____ weeks and is what stage of fetal development do all major organs
fully developed at _____ - -3-4; 1st trimester develop? - -embryonic
how many layers of tissue in the placenta separate the feta stage is defined as ____ - -8 weeks to
the baby's and mom's blood? - -3-4 birth
what does the placenta produce? - -glycogen, the placenta works _____ insulin in the second half of
fatty acids, cholesterol pregnancy? - -against
what hormones are secreted from the placenta? - how much should a woman's caloric intake be
-hpl, hcg, estrogen, progesterone increased during pregnancy? - -300 calories
the umbilical cord has ___ - -2 veins, 1 artery water metabolism is _____ during pregnancy -
(AVA) -increased
can a baby survive with only one artery and one what factors influence good nutrition in a pregnant
vein? - -yes (usually associated with feta woman? - -age, pre-pregnancy nutritional
anomalies) status, parity
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