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Body Systems L 4-5
| Term | Definition |
|---|---|
| vascular tissue | specialized plant tissue composed of tubelike cells that transports water and nutrients in some plants |
| xylem | a type of vascular tissue that carries water and dissolved nutrients from the roots to the stem and the leaves |
| phloem | a type of vascular tissue that carries dissolved sugars throughout a plant |
| Stoma | a small opening in the epidermis, or surface layer, of a leaf |
| pharynx | a tubelike passageway at the top of the throat that receives air, food, and liquids from the mouth or nose |
| trachea | a tube that is held open by C-shaped rings of cartilage; connects the larynx and the bronchi |
| bronchi | two narrow tubes that carry air into the lungs from the trachea |
| lungs | the main organs of the respiratory system |
| diaphragm | a large muscle below the lungs that contracts and relaxes as air moves into and out of your lungs |
| alveoli | microscopic sacs or pouches at the end of the bronchioles where gas exchange occurs |
| atria | the upper two chambers of the heart |
| ventricles | the lower two chambers of the heart |
| artery | a vessel that carries blood away from the heart |
| vein | a vessel that carries blood toward the heart |
| capillary | a tiny blood vessel that delivers supplies to an individual cell and takes away waste materials |
| open circulatory system | a system that transports blood and other fluids into open spaces that surround organs in the body |
| closed circulatory system | a system that transports materials through blood using vessels |
| nervous system | the part of an organism that gathers, processes, and responds to information |
| neuron | the basic functioning unit of the nervous system; a nerve cell |
| central nervous system | system made up of the brain and the spinal cord |
| spinal cord | a tubelike structure of neurons that sends signals to and from the brain |
| peripheral nervous system | system made of sensory and motor neurons that transmit information between the central nervous system (CNS) and the rest of the body |
| sensory system | the part of your nervous system that detects or senses the environment |
| receptor | special structures in all parts of the sensory system that detect stimuli |
Created by:
Kuiper
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