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6-19

The Human Body

QuestionAnswer
the system composed of all the bones in your body skeletal system
the pigment, or color in your skin that protects it from ultraviolet light melanin
an organ that can relax, contract, and provide force to move you and your body parts muscles
the system of your body that breaks down food so that nutrients can be absorbed by your body digestive system
substances in food that provide for cell development nutrients
the system of the body made up of structures that help move oxygen into the body and waste gases out of the body respiratory system
grapelike clusters of air sacs at the end of each bronchiole alveoli
microscopic blood vessels that surround each alveoli capillaries
an involuntary, automatic response to a stimulus reflex
the male reproductive cells sperm
a mixture of sperm and fluid from the seminal vesicles semen
the female process in which an egg is released from the ovaries ovulation
the female reproductive cell egg
the female monthly cycle of changes menstrual cycle
the period of development from fertilized egg to birth pregnancy
a stage when the zygote attaches to the wall of the uterus embryo
the name given to the embryo after the first two months of pregnancy fetus
Created by: mrsgrom
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