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Chapter 2

PSYC 2P12 Chapter Notes - Chapter 2: Blood Test, Developmental Disorder, Abdominal Wall

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Cathy Mondloch

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PSYC 2P12 Chapter 2 Notes
Uterus: the pear shaped muscular organ in a womans abdomen that houses the
developing baby
Cervix: the neck or narrow lower portion of the uterus
Fallopian tube: one of a pair of slim, pipe like structures that connect the ovaries
with the uterus
Ovary: one of a pair of almond shaped organs that contains a womans eggs
Ovum: an egg cell containing the genetic material contributed by the mother to the
Fertilization: union of sperm and egg
Ovulation: moment during a womans monthly cycle when an ovum us expelled from
the ovary
Hormones: chemical substances released in the bloodstream that target and change
organs and tissues
Testes: male organs that manufacture sperm
Chromosome: threadlike strand of DNA located in the nucleus of every cell that
carries the genes, which transmit hereditary information
DNA: material that makes up genes which bear our hereditary characteristics
Gene: segment of DNA that contains a chemical blue print for manufacturing a
particular protein
Prenatal Development
Germinal stage: the +rst 14 days of prenatal development from fertilization to full
Zygote: a fertilized ovum
Blastocyst: the hollow sphere of cells formed during the germinal stage in
preparation for implementation
Implantation: process in which a blastocyst becomes embedded in the uterine wall
Placenta: the structure projecting from the wall of the uterus during pregnancy
through which the developing baby absorbs nutrients
Embryonic stage: second stage of prenatal development lasting from week 3-8
Neural tube: a cylindrical structure that forms along the back of the embryo and
develops into the brain and spinal cord
Neuron: a nerve cell
Proximodistal Sequence: developmental principle that growth occurs from the most
interior parts of the body outward
Cephalocaudal sequence: developmental principle that growth occurs in a sequence
from head to toe
Mass-to-speci+c sequence: “ large structures and movements follow increasingly
detailed re+nements
Fetal stage: +nal period of prenatal development, lasting 7 months, characterized
by physical re+nements, massive growth, and development of the brain
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