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

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