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7th Grade Chapter 17

Respiration and Excretion

QuestionAnswer
pharynx a passageway for both air and food
bronchitis an irritation of the breathing passages which have become clogged with mucus
each alveolus is surrounded by a network of capillaries
urinary bladder stores urine until the body is ready to eliminate if
excretion the process of removal of the body's wastes
nicotine increases blood pressure
cilia hairlike structures that line the nasal cavities and trachea
tar in smoking damages the cilia in the respiratory system
function of the kidneys remove urea and excess water
emphysema destroys lung tissue
vocal cords stretch across the opening of the larynx
vocal cords produces a person's voice
a sign of lung cancer is a tumor in your lungs
liver produces urea
urine watery fluid that contains urea and other wastes
gas exchange occurs in the alveoli
an addictive drug in smoking nicotine
skin an excretory organ that eliminates water and wastes in perspiration
nephrons tiny filtering structures where urine is produced in the kidneys
diaphragm dome-shaped muscle that plays an important role in breathing
role of the respiratory system to bring oxygen in the body
air is exhaled from the lungs when the diaphragm relaxes and moves upward
organs of excretion that maintain homeostasis include the kidneys, lungs, skin, and liver
respiration the chemical process in which oxygen and glucose react to release energy inside body cells
bronchi pattern of smaller and smaller tubes that resembles the branches of a tree
carbon monoxide in smoking binds to hemoglobin causing red blood cells to carry less oxygen
main function of the excretory system to collect and remove wastes from the body
epiglottis a small flap of tissue that seals off the trachea during swallowing
urea the waste chemical that comes from the breakdown of proteins in the body
trachea provides a passageway for air to flow to the lungs
ureter a small tube that carries urine from the kidneys to the bladder
urethra a small tube that carries urine out of the body
Created by: Mrs. Gordon
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