28 terms

5.L.1.2 :: Human Body Systems

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Terms in this set (...)

circulatory system
System transports gases and other substances such as oxygen, carbon dioxide, and nutrients in the body.
blood
A circulating connective tissue made of plasma, cells, and platelets
heart
A hollow, muscular organ that pumps blood throughout the body.
blood vessels
tubes varying in size that carry blood to and from the heart and the rest of the body
respiratory system
System responsible for gas exchange, Brings oxygen into the body and removes carbon dioxide (CO2)
trachea
Tube that allows air to pass to and from lungs
lungs
Main organs of the respiratory system, where oxygen and CO2 gas exchange takes place
diaphragm
Large, flat muscle at the bottom of the chest cavity that helps with breathing
skeletal system
Protects and supports body organs, and provides a framework the muscles use to cause movement. Blood cells are formed within bones.
bone
Dense, hard connective tissue composing the skeleton
bone marrow
A soft tissue inside the bone that produces blood cells
joint
A place in the body where two bones come together
muscular system
System that enables movement of the body and internal organs
muscles
bands or bundles of fibers that stretch and contract like rubber bands
skeletal muscle
A muscle that is attached to the bones of the skeleton and provides the force that moves the bones.
cardiac muscle
Muscle of the heart
smooth muscle
Involuntary muscle found inside many internal organs of the body (i.e. esophagus, intestines)
digestive system
Breaks down food into smaller molecules. Absorbs these nutrients into the body.
mouth
the opening in the lower part of a human's face that is the first step of digestion
saliva
softens food in the mouth making it easier to swallow; helps break down food into simpler forms; secreted by glands in the mouth
esophagus
A muscular tube that connects the mouth to the stomach.
stomach
A muscular and elastic sac that contains a strong acid, serves mainly to store food and continue mechanical and chemical digestion.
small intestine
The part of the digestive system in which most chemical digestion takes place, longer and narrower of the 2 intestines
large intestine
The last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body, shorter and wider of the 2 intestines
nervous system
Communication center of the body, receives information and transmits electrical signals about what is happening inside and outside the body
brain
an organ located in your nervous system that controls our body and allows us to think
spinal cord
Nerves that run up and down the length of the back and transmit most messages between the body and brain
nerve
A collection of nerve cells (neurons) that carry electrical signals between the central nervous system and other parts of the body

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