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Cells and Body

TermDefinition
Cell The smallest unit that can live on its own and that makes up all living organisms and the tissues of the body.
Nucleus The control center of the cell
Cell Membrane A layer on the outside of the cell that holds the cell together.
Cytoplasm The jellylike substance that fills the cell membrane.
Unicellular An organism that is made of only one cell and is microscopic.
Multicellular (Of an organism or part) having or consisting of many cells.
Heart A fist-sized organ that pumps blood throughout your body.
Vein A blood vessel that carries blood to the heart from tissues and organs in the body.
Artery A blood vessel that carries blood from the heart to tissues and organs in the body.
Blood A specialized body fluid.
Blood Vessels A tube through which the blood circulates in the body.
Transport The act or the means by which a molecule or ion is moved across the cell membrane or via the bloodstream.
Respiratory System Move fresh air into your body while removing waste gases.
Nose The prominent structure between the eyes that serves as the entrance to the respiratory tract and contains the olfactory organ.
Mouth Is the first part of the digestive tract. It is adapted to receive food by ingestion, break it into small particles by mastication, and mix it with saliva. The lips, cheeks, and palate form the boundaries.
Trachea A long, U-shaped tube that connects your larynx (voice box) to your lungs. The trachea is often called the windpipe. It's a key part of your respiratory system. When you breathe in, air travels from your nose or mouth through your larynx.
Diaphragm The thin muscle below the lungs and heart that separates the chest from the abdomen.
Lungs One of a pair of organs in the chest that supplies the body with oxygen, and removes carbon dioxide from the body.
Exchange The exchange of substances between the internal and external environments of cells
Circulatory System Delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.
Nervous System This system sends messages back and forth between the brain and the body. The brain is what controls all the body's functions. The spinal cord runs from the brain down through the back.
Brain The organ inside the head that controls all body functions of a human being.
Spinal Cord A long, tube-like band of tissue. It connects your brain to your lower back. Your spinal cord carries nerve signals from your brain to your body and vice versa. These nerve signals help you feel sensations and move your body.
Nerves A bundle of fibers that receives and sends messages between the body and the brain. The messages are sent by chemical and electrical changes in the cells that make up the nerves.
Central Nervous System Is a processing center that manages everything that your body does, from your thoughts and feelings to your movements. Your brain and spinal cord are “central” to your CNS because they take in and send out information to your entire body.
Control The use by humans of beneficial insects such as predators and parasitoids, or pathogens such as fungi and viruses, to control unwanted insects, weeds, or diseases.
Peripheral Nervous System It plays key role in both sending information from different areas of your body back to your brain, as well as carrying out commands from your brain to various parts of your body.
Muscular System Pumping blood and supporting movement to lifting heavy weights or giving birth.
Skeletal System A static structural organ supporting body movement, protecting the internal organs, and as a reservoir of minerals.
Created by: Amodi
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