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Life Science

ch. 18 vocabulary

active immunity The ability of our immune system to recognize the same pathogen forever, following an infection.
alveolus Structure in the lungs where gas exchange occurs; the functional unit of the lung.
antibodies Proteins that are made in response to an infection that stick to a pathogen and target it for removal.
aortic valve Structure that separates the left ventricle from the aorta.
autoimmune disease Disease that occurs when the immune system is stimulated to attack person's own body.
biconcave disc Name given to the shape of red blood cells; disc shaped, but each side of the cell is "pushed in."
Blood a connective tissue comprised of a mixture of liquid called plasma in which blood cells are suspended
blood pressure The pressure that forms in the blood vessels as a result of the pumping action of the heart
Bronchi 2 main branches of the trachea one which carries air to the right line and the other 2 the left lung
Chemical barriers Chemicals found mainly in the fluids of the eyes mouth and stomach to prevent pathogens from entering the body
Chyme An acidic paste the stomach churns food into
Circulatory system System to move oxygen hormones and nutrients to the tissues/organs in to move carbon dioxide waste from tissues/organs
Dialysis An artificial way to filter the blood for patients with kidney failure
epiglottis A rigid flap of tissue at the top of the entry into the lungs that keeps food or liquid from entering them
erythrocytes red blood cells
Esophagus A muscular tube that squeezes food down to the stomach from the mouth
GI tract the digestive system
Hemoglobin in iron containing molecule that binds to oxygen and carries it to the tissues
immune system A complex system which protects us from infectious organisms.
Inflammatory reaction process for chemicals are released around the area where an infection is which causes swelling and redness
kidney failure Kidneys that are unable to properly filter the blood
leukocytes infection-fighting white blood cells
microvilli foldings of tissue on the surface of villi
Mitral valve structure that separates the left atrium from the left ventricle
Nephron functional unit of the kidney
nutrients Substances gained from the food we eat and the liquids we drink which humans need a variety of to live.
pathogens organisms that can cause infection.
peristalsis a wave of smooth muscle contraction that pushes food along the GI tract.
physical barriers Skin and cilia that are in place to keep pathogens from entering the body.
plasma Liquid component of blood that contains red blood cells.
pulmonic valve Structure that separates the right ventricle from the pulmonary artery.
pulse Rhythmic bulging fo the arteries caused by the pumping of the left ventricle.
red blood cells The cells responsible for transporting oxygen from the lungs to the tissues and some carbon dioxide from the tissues to the lungs.
respiratory rate The number of times a person needs to breathe per minute.
salivary glands Glands located around the jaw, which begin the process of chemical digestion by secreting saliva into the mouth.
sinoatrial node A bundle of tissue in the right atrium where each impulse for the heart to beat begins.
tricuspid valve Structure that separates the right atrium from the right ventricle.
villi Folding of tissue that line small intestine for absorb vitamins, minerals, carbohydrates, amino acids, and lipids.
vocal cords Two folds of skin on either side of the voice box which generate the sound of our voices.
Created by: kaisnead
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