Examlex
The English system is used in the United States.
Germ Layers
The three primary layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo from which all tissues and organs develop.
Fertilized Egg
A fertilized egg is the result of the fusion of a male sperm cell and a female ovum, marking the beginning of a new organism's development.
Umbilical Blood Vessels
The blood vessels in the umbilical cord that carry oxygen and nutrients from the mother to the fetus and waste products back to the mother.
Homeotic Genes
Genes that regulate the development of anatomical structures in various organisms during embryonic development.
Q1: Artery
Q8: Heroin is a chemical derivative of:<br>A)Morphine<br>B)Barbituric acid<br>C)Codeine<br>D)Methadone
Q12: TLC uses _ as its moving phase.<br>A)A
Q12: Which is NOT considered a porous surface?<br>A)Tile<br>B)Cloth<br>C)Paper<br>D)Cardboard
Q16: Cortex
Q47: The _ microscope is the firearms examiner's
Q49: Postmortem redistribution
Q51: Visible light
Q56: Dermal papillae are cells that form a
Q87: The reagent used for the field test