click below
click below
Normal Size Small Size show me how
Human Body
| Term | Definition |
|---|---|
| Esophagus | A Muscular tissue that connects the mouth to the stomach. |
| Epiglottis | A Flap of tissue that seals of the windpipe and prevents food from entering. |
| peristalis | Involuntary waves of muscle contraction that keep food moving along in one directions through the central nervous system. |
| Absorption | The process by which nutrients pass from the digestive system into the blood. |
| Striated Muscle | A Muscle that appears to be banded also called the skeletal muscle. |
| Smooth muscle | Involuntary muscle found inside many internal organs of the body. |
| Cardiac Muscle | Tissue found only in the heart. |
| Ligament | Strong connective tissue that holds bones together in movable joints. |
| Tendons | Strong connective tissue that attaches muscle to bone. |
| Cartilage | A connective tissue that is more flexible than bones and that protects the ends of bones and keeps them from rubbing together. |
| Villi | Tiny finger shaped structure that covers the inner surface of the small intestine and provide a large surface area though which digested food is absorbed. |
| 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. |
| Homeostasis | The maintenance of stable internal conditions in an organism. |
| Joint | A place in the body where two bones come together. |
| Dermis | The inner layer of the skin. |
| Epidermis | The outer layer of the skin. |
| Compact Bone | Hard,dense bone tissue that is beneath the outer membrane of a bone. |
| Spongy Bone | Layer of bone tissue having many small spaces and found just inside the layer of compact bone. |
| Folicle | Structure in the dermis of the skin from which a strand of hair grows |
| Artery | A blood vessel that carries blood away from the heart. |
| melanin | A pigment that give skin its color. |
| Mechanical Digestion | |
| Chemical Digestion | |
| Integumentary system | |
| Red marrow | Soft connective tissue inside the bone that produces red blood cells. |
| Yellow marrow | Soft connective tissue inside the bone that sores fat. |
| Capillary | A tiny blood vessel where substances are exchanged between the blood and the body cells. |
| Vein | A blood vessel that carries blood back to the heart. |
| Plasma | The liquid part of the blood. |
| Red Blood Cell | A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body. |
| Hemoglobin | An Iron containing protein that binds chemically to oxygen molecules. |
| White Blood Cell | A blood cell that can fight diseases. |
| Platelets | A cell fragment that play a important part in forming blood clots. |
| Lymph | The fluid that the lymphatic system collects and returns to the blood stream |
| Lymph node | A small knob of tissue in the lymphatic system tat filters lymph,trapping bacteria and other micro organism that cause disease. |
| cilliia | The hair like projections on the outside of cells that move in a wave like manner. |
| Pharynx | The Throat. |
| Larynx | The Voice Box. |
| trachea | The windpipe;a passage through which the air moves in the respiratory systems. |
| alveoli | Tiny sacs of lung tissue specialized for the movement of gasses between air and blood. |
| diaphram | A large muscle located at the bottom of a mammals rib cage that functions in breathing. |
| excretion | The process by which wastes are removed from the body. |
| urea | A chemical that comes from the breakdown of proteins. |
| kidney | A major organ in the excretory system that removes urea and other wastes from the blood. |
| ureter | A narrow tube that carries urine from the kidneys to the urinary bladder. |
| urinary bladder | A sack-like muscular organ that stores urine until it is eliminated from the body |
| urethra | A small tube which urine flows through the body. |
| nephron | A small filtering structure found in the kidneys that removes wastes from the blood and produces urine. |
| pathogen | An organism that causes diseases |
| inflammatory response | part of the body's defense against pathogens in which fluid and white blood cells leak from the blood vessels into tissues and white blood cells destroy pathogens. |
| immune response | part of the body's defense against pathogens in which cells of the immune system react to each kind of pathogen with a defense targeted specifically at that pathogen. |
| antibody | A protein produced by the b cell of the immune system that destroys pathogens. |
| stimulus | A change in an organism's surroundings that causes the organism to react. |
| response | An action or change in behavior that occurs in reaction to a stimulus. |
| neuron | A cell that carries information through the nervous system. |
| dendrite | A thread like extension of a neuron that carries nerve impulses toward the cell body . |
| axon | A thread like extension of a neuron that carries nerve impulses away the cell body . |
| nerve | A bundle of nerve fibers. |
| Sensory neuron | A neuron that picks up stimuli from the internal or external environment and converts each stimulus ito a nerve impulse. |
| inter neuron | A neuron that carries nerve impulses from one neuron to the other. |
| motor neuron | A neuron that sends an impulse to a muscle or gland ,causing the muscle or gland to react. |
| synapse | The junction where one neuron can transfer an impulse to the next structure. |
| central nervous system | The division of the nervous system consisting of the brain and spinal cord. |
| peripheral nervous system | The division of the nervous system consisting of all the nerves located outside the central nervous system. |
| somatic nervous system | The group of nerves in the peripheral nervous system that controls voluntary actions. |
| autonomic nervous system | The group of nerves in the peripheral nervous system that controls involuntary actions. |
| reflex | An automatic response that occurs rapidly and without conscious control. |
| hormone | A chemical in an organism that produces a specific effect such as growth or development. |
| endocrine gland | A structure of the endocrine system that produces and releases its chemical products directly into the blood stream. |
| target cell | A cell in the body that recognizes a hormones chemical structure. |
| Skeletal Muscle |