Body System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Homeostasis | The maintenance of stable internal conditions in an organism
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| Joint | A lace in the body where two bones come together
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| Spongy Bone | Layer of bone tissue having many small spaces and found just inside the layer of compact bone.
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| Compact Bone | Hard,dense bone tissue that is beneath the outer membrane of a bone.
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| Cartilage | A connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together.
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| Ligament | Strong connective tissue that holds bones together in movable joints.
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| Tendon | Strong connective tissue that attaches muscle to bone.
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| Red Marrow | The red vascular substance consistence of connective tissue and blood vessels.
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| Yellow Marrow | Bone marrow that is yellow with fat.
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| Skeletal Muscle | A muscle that is attached to the bones of the skeleton and provides the force that moves the bones.
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| Striated Muscle | A muscle that appears banded;also called skeletal muscle.
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| Smooth Muscle | Involuntary muscle found inside many internal organs of the body.
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| Cardiac Muscle | Muscle tissue found only in the heart.
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| Integumentary System | The organ system that protects the body from various kinds of damage.
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| Epidermis | The outer layer of the skin.
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| Dermis | The inner layer of the skin.
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| Melanin | A pigment that gives skin its color.
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| Follicle | Structure in the dermis of the skin from which a strand of hair grows.
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| Mechanical Digestion | Process by which food is broken down into simple chemical.
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| Epiglottis | A flap of tissue that seals of the windpipe and prevents food from entering.
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| Peristalsis | Involuntary waves of muscle contraction that keep found moving along in one direction through the digestive system.
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| Esophagus | A muscle tube that connects the mouth to the stomach.
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| Absorption | The process by which nutrients pass from the digestive system into the blood.
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| Villus | The villi work in partnership with the small intestine to dispatch nutrients to the bloodstream.
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| Pacemaker | A group of cells located in the right atrium that sends out signals that make the heart muscle contract and that regulates heartbeat rate.
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| Atery | A blood vessel that carries blood away from the heart.
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| Capilary | A tiny blood vessel where substance are exchanged between the blood and the body cells.
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| Vein | A blood vessel that carries blood back to the heart.
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| Plasma | The liquid part of blood.
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| Red Blood Cell | A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body.
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| Hemoglobin | An iron-containing protein that binds chemically to oxygen molecules.
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| White Blood Cell | A blood cell that fights disease.
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| Platelet | A cell fragment that plays an important part in forming blood colts.
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| Lymph | The fluid that the lymphatic system collects and returns to the bloodstream.
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| Lymph Node | A small knob of tissue in the lymphatic system that filters lymph,trapping bacteria and other microorganism that cause disease.
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| Cilia | The hairlike projections on the outside of cells that move in a wavelike manner.
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| Pharynx | The throat
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| Trachea | The windpipe: a passage through which air moves in the respiratory system
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| Alveoli | Tiny sacs of lungs tissue specialized for the movements of gases between air and blood.
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| Diaphragm | A large muscle located at the bottom of a mammals rib cage that functions in breathing.
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| Larynx | The voice box.
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| Excretion | The process by which wastes are removed fro the body.
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| Urea | A chemical that comes from the breakdown of proteins.
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| Kidney | A major organ of the excretory system that removes urea and other wastes from the blood.
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| Ureter | A narrow tube that carries urine from one of the kidneys to the urinary bladder.
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| Urinary Bladder | A sack like muscular organ that store urine it is eliminated from the body.
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| Urethra | A small tube through which urine flows from the body.
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| Nephron | Small filtering structure found in the kidneys that removes waste from blood and produces urine.
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| Pathogen | An organism that cause disease.
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| Inflammatory Response | Part of the body's defense against pathogens,in which fluid and white blood cells leak from blood vessels into tissues, and white blood cells destroy pathogens.
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| Immune Response | Part of the body's defense against pathogens in which cells of the immune system react to each kind of pathogens with a defense targeted specially at that pathogen.
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| Antibody | A protein produced by a B cell of the immune system that destroys pathogen.
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| Stimulus | A change in an organisms surroundings that causes the organism to react.
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| Response | An action or change in behavior that occurs in reaction to a stimulus.
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| Neuron | A cell that carries information through the nervous system.
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| Dendrite | A threadlike extension of a neuron that carries nerve impulses toward the cell body.
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| Axon | A threadlike extension of a neuron that carries nerve impulses away from the cell body.
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| Nerve | A bundle of nerve fibers
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| Sensory Neuron | A neuron that picks up stimuli from the internal or external environment and converts each stimulus into a nerve impulse
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| Interneuron | A neuron that carries nerve impulses from one neuron to another.
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| Motor Neuron | A neuron that sends an impulse to a muscle gland, causing the muscle or gland to react.
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| Synapse | The junction where one neuron can transfer an impulse to the next structure
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| Central Nervous System | The division of the nervous system consisting of the brain and spinal cord.
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| Peripheral Nervous System | Division of the nervous system consisting of all of the nervous located outside the central nervous system
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| Somatic Nervous System | Group of nerves in the peripheral nervous system that controls voluntary actions
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| Autonomic Nervous System | The group of nerves in the peripheral nervous system that controls involuntary actions.
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| Reflex | An automatic response that occurs rapidly and without conscious control.
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| Hormone | A chemical in an organism that produces a specific effect such as growth or development.
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| Endocrine Gland | A structure of the endocrine system that produces and releases its chemical products directly into the bloodstream
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| Target Cell | A cell in the body that recognizes a hormone's chemical structure.
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| Chemical Digestion | The process by which chemicals in the body break down food molecules.
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