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| tiny, thin walled grapelike clusters at the end of each bronchiole that are surrounded by capillaries; carbon dioxed and oxygen exchange takes place |
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| blood vessel that carries blood away from the heart, and has thick, elastic walls made of connctive tissue and smooth muscle tissue |
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| lung disorder in which bronchial tubes contract quickly and cause shortness of breath, wheezing, or coughing; may occur as an allergic reaction |
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| two upper chambers of the heart that contract at the same time during a heartbeat |
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| neuron structure that carries messages away from the cell body |
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| elastic, muscuslar organ that holds urine until it leaves the body through the urethra |
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| connects the brain to the spinal cord and is made up of the midbrain, the pons, and the medulla |
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| two short tubes that branch off the lower end of the trachea and carry air into the lungs |
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| microscopic blood vessel that connects arteries and veins; has walls one cell thick, through which nutrients and oxygen diffuse body cells, and waste materials and carbon dioxide diffuse out of body cells |
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| thick , smooth, flexible, slippery tissue layer that covers the ends of bones, makes movement eaiser by reducing friiction, and absorbs shocks |
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| divisoin of the nervous system, made up of brain and spinal cord |
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| part of the brain that controls voluntary muscle movements, maintains muscle tone, and helps maintain balance |
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largest part of the brain, where
memory is stored, movements are controlled, and impulses from the senses are interpreted |
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| flow of blood to and from the tissues of the heart |
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| neuron structure that recieves messages and sends them to the cell body |
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| muscle beneath the lungs that contracts and relaxes to move gases in and out of the body |
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| chemical in red blood cells that carries oxygen from the lungs and to the cells, and carries some carbon dioxide from the body cells to the lungs |
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| regulation of an organisms' internal,maintaining |
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| muscle, such as heart muscle, that cannot be conciously controlled |
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| any place where two or more bones come together; can be movable or immovable |
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| bean-shaped uurinary system organ that is made up of about 1 million nephrons and filters blood, producing urine |
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| airway to which the vocal cords are attached |
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| touugh band of tissue that holds bones together att joints |
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| tissue fluid that has diffused into lymphatic capillaries |
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| carries lymph through a networ of capillaries and vessels, and drains into the large veins near the heart; helps fight infections and diseases |
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| a type of white blood cell that fights infection |
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| organ that can relax contract,and provide the force to move bones and body parts |
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| tiny filtering unit of the kidney |
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| basic functioning unit of the nervous system, made up of a cell body, dendrites, and axons |
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| peripheral nervous system |
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| divison of the nervous system, made up of all the nerves outside the CNS; connects the brain and spinal cord to other body parts |
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| tubelike passage way for food, liguid, and air |
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| liquid part of blood, made of of water,in which oxygen, nutrients, and minerals are dissolved |
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| irregularly shaped cell fragment that helps clot blood and releases chemicals, that help form fibrin |
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| flow of blood through the heart to the lungs and back to the heart |
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| automatic, involuntary response to stimulus; controlled by the spinal cord |
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| light-sensitive tissue at the back of the eye; contains rods and cones |
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| voluntary, straite muscle taht moves bones, wors in pairs, and is attached to bones by tendons |
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| invouluntary, nonstraited muscle taht controls movement of internal organs |
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| small space across which an impulse moves from an axon to the dendrites or cell body of another neuron |
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| largest part of the circulatory system, in which oxygen-riche blood flows to all the organs and body tissues, except the heart and lungs, and oxgen-poor blood is returned to heart |
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| major sensory receptor on the tounge; contains taste hairs that send impulses to the brain for interpretation of the senses |
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| thick band of tissue that attaches bones to muscles |
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| air-conducting tube that connects the larynx with the bronchi, is linned with mucous membranes and cilla, and has strong catillage rings |
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| tube that carries urine from each kidney to the bladder |
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| tube that carries urine from the bladder to the outside of the body |
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| system of excretory ograns that rids blood of wastes,controls blood volume by removing excess water, and balances concentrations of salt and water |
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| waste water that contains excesss water, salts, and other wastes that are not reabsorbed by the body |
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| blood vessel that carries blood bac to the heart, and has one-way valves that keep blood moving toward the heart |
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| two lower chambers of the heart, that contract at the same time during a hearbeat |
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| two lower chambers of the heart, that contract at the same time during a hearbeat |
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| muscle, such as leg or arm muscle, that can be consciously controlled |
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