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Chapter 23 Vocab
Chapter 23 Vocab
21
Science
8th Grade
10/30/2013

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Term
Cardiovascular system
Definition
a collection of organs that transport blood to and from your bodys cells; the organs in this system include the heart, the arteries, and the veins.
Term
Blood
Definition
A conective tissue made up of platelets, white blood cells, red blood cells and plasma
Term
Arteries
Definition
blood vessels that carry blood from the heart.
Term
Capillaries
Definition
The smallest blood vessel.
Term
veins
Definition
blood vessels that direct blood to the heart
Term
Pulmunary Circulation
Definition
The curculation between the heart and the lungs.
Term
systemic circulation
Definition
the circulation of blood between the heart and the body (including the lungs)
Term
blood pressure
Definition
the amount of force exerted by blood on the inside walls of a blood vessel.
Term
lymphatic system
Definition
a collection of organs that collect extracellular fluid and return it to the blood; the organs in the system include the lymph nodes and the lymphatic vessels.
Term
lymp
Definition
The fluid and particles absorbed into the lymph capillaries.
Term
lymp nodes
Definition
small bean-shaped organs that contain small fibers that work like nets to remove particles from the lymph
Term
thymus
Definition
A lymph organ that produces lymphocytes.
Term
spleen
Definition
An organ that filters blood and produces lymphocytes.
Term
tonsils
Definition
Small masses of soft tissue located at the back of the nasal cavity, on the inside of the throat, and at the back of the tounge
Term
Respiration
Definition
The exchange of gasses between living cells and their enviroment; includes breathing and cellular respiration.
Term
Respitory system
Definition
A collection of organs whos primary function is to take in oxygen and expel carbon dioxide; the organs of the system include the lungs, the throat, and the passage ways that lead to the lungs.
Term
pharynx
Definition
The upper portion of the throat.
Term
larynx
Definition
The area of the throat that contains the vocal cords.
Term
trachea
Definition
The air passageway fromt the larynx to the lungs.
Term
bronchi
Definition
The two tubes that connect the lungs with the trachea.
Term
alveoli
Definition
Tiny sacs that form form the bronchiole branches of ythe lungs.
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