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7th Grade - Chapter 14 Digestion, Respiratory, & Excretion

Teacher: Mrs. Morey
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Across
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Two short tubes that branches off the lower end of the trachea and carry air into the lungs
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Air conducting tube that connects the larynx with the bronchi, is lined with mucous membranes and cilia, and contains strong cartilage rings
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Blood vessel that connects the arteries and veins
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Fingerlike projections covering the walls of the small intestine that increases the surface area for food absorption
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Building block of protein
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Nutrient that usually is the body's main source of energy
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Water-soluable or fat-soluable organic nutrient needed in small quantities for growth, for preventing some diseases, and for regulating body functions
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Tube that carries urine from each kidney to the bladder
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A type of protein that regulates chemical reactions in cells without being changed or used up itself
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Substances in foods - proteins, carbohydrates, fats, vitamins, minerals, and water - that provide energy and materials for cell development, growth, and repair
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Tiny, thin-walled, grape-like clusters at the end of each bronchiole that are surrounded by capillaries, carbon dioxide and oxygen exchange take place
Down
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Inorganic nutrient that regulates many chemical reactions in the body
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Elastic, muscular organ that holds urine until it leaves the body through the urethra
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The smallest particle of a substance that retains the properties of a substance and is composed of one or more atoms
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Waves of muscular contractions that move food through the digestive tract
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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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Liquid product of digestion
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One-celled organisms without membrane-bound organelles
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Airway to which the vocal chords are attached
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Tiny filtering units of the kidneys