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sheets of cells that cover the body's suface and form the lining of the internal organs
the system that forms the communication system that helps the body respond to the enviroment
microscopic blood vessels connecting arteries and veins allowing exchange between blood and interstitial fluid
fluid from blood lost to interstitial fluid that is collected in the lymphatic vessels and reused in blood
carry blood from the heart to the lungs to collect oxygen and back to the heart to be dispersed through the body
small fragments of blood cells that stick to a damaged blood cells and release clotting factors to form fibrin and trap red blood cells from leaving vessels
germ theory of disease
a theory stating that infectious disease is caused by pathogens that spread among organisms
chemical alarm released by mast cells which causes blood vessels to increase blood flow and the number of white blood cells there
a molecule on the surface of cancer cells, pollen, fungi, bacteria, and viruses that provokes an immune response
a nonharmful does of a pathogen to stimulate immune response and formation of memory cells to protect from a real exposure to the pathogen
the system that coordinates the body's activities by detecting stimulii and directing the body's responses
the system that provides body support, protects certain organs such as the brain and lungs, and works with the muscular system in body movements
the system that enables body movement and facial expressions essentail to human communication
the system that covers the body and protects it from injury, infection, excessive heat/cold, and drying out
the system that delivers oxygen and nutrients to body cells and transports waste products to excretory organs
the system that ingests food, breaks it down into smaller chamical units for use in the body and eliminates undigested material
the system that removes waste products from the body and regulates the chemical makeup of the blood
the system that secretes hormones that affect the functons of target cells and thereby regulates the activites of the other organ systems
the system that reproduces gametes; the female system also provides the organs needed to support a developing embyro
the system that defends the body against infections and cancer cells; supports the function of the circulatory sustem by returning fluid to blood vessels near heart
the part of the nervous system that includes the nose, mouth, eyes, ears, and skin
releases juices into the small intestine that contain enzymes for breaking down carbs, proteins, and lipids
the gland that controls biorhythms in some animals and control the onset of puberty in humans
the gland that stimulates development of female secondary sex characteristics, stimulates growth of sex organs at puberty, and prompts monthly preparation of uterus for pregnancy
the gland that initiates stress responses, increases heart rate, blood pressure, and metabolic rate, dilates blood vessels, mobilizes fat and raises blood sugar levels
the gland that stimulates development of male secondary sex characteristics, stimulates growth spurt at puberty, and stimulates spermatogenesis
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