science flashcard terms

Term Definition
the deeper, thicker inner layer of the skin dermis
the thin outer layer of the skin epidermis
the pigment that determines skin and hair color melanin
glands in the dermis that produce sebum and open into a hair follicle sebaceous glands
glands in the dermis that produce sweat sweat glands
a sac in which urine is stored bladder
a toxic chemical produced in all cells as a product of protein metabolism urea
tiny filtering devices in the kidney that remove harmful substances from the blood nephrons
the liquid produced by the kidneys that contains dissolved waste materials urine
the tube that carries urine from the bladder to the outside of the body urethra
the tube through which the urine flows from the kidney to the bladder ureter
a short tube that connects the mouth and nasal cavities to the esophagus and larynx pharynx
the blood vessel in which blood flows directly from the heart aorta
clusters of air sacs deep in the lungs alveoli
a respiratory disorder, often caused by allergies: attacks of labored breathing asthma
the branches of the trachea that extend into the lungs bronchi
inflammation (swelling) of the bronchi bronchitis
a large, flat muscle that lies underneath the lungs and helps move air into them diaphragm
lung disease in which the walls of the alveoli are destroyed and less lung tissue can exchange oxygen and carbon dioxide emphysema
the exchange of gasses between living things and their environment respiration
the tube that carries air to and from the lungs trachea
a tube that contains the vocal chords larynx
a medical condition that results from not enough hemoglobin in the blood anemia
large blood vessels that carry blood away from the heart arteries
condition that occurs when fatty material builds up on the inside walls of arteries atherosclerosis
an upper chamber of the heart atrium
tiny blood vessels that carry blood to certain body cells capillaries
a system of vessels and organs that transports materials to and from body cells cardiovascular system
the protein in red blood cells that attaches to oxygen hemoglobin
a hereditary disease in which the blood clots abnormally or not at all hemophilia
a cancer in which white blood cell production is abnormal leukemia
the thin, yellow fluid part of the blood plasma
tiny cell fragments that clump together at the site of a wound to form a blood clot platelets
the circulation of blood between the heart and the lungs pulmonary circulation
the circulation of blood between the heart and the rest of the body (not the lungs) systemic circulation
large blood vessels that take blood to the heart veins
a disease of the lungs that results in fluid buildup in the alveoli pneumonia
the lower chamber of he heart ventricle

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