Vocabulary Flashcards
Circulatory system
Body system formed by all the structure that moves blood through the body; also called the cardiovascular system
Heart
Hollow, muscular organ located in the center of the chest; pumps blood into the circulatory system
Arteries
Blood vessels that carry oxygen rich blood
Capillaries
Small arteries that deliver oxygen and nutrients to cells and pick up cells waste
Veins
Blood vessels that carry oxygen poor blood
Plasma
liquid part of blood
Respiratory system
Body system of organs that contain vitally important oxygen from the outside world
Bronchi
Two air passages, each of which connects the trachea to the lung
Respiration
exchange of oxygen and carbon dioxide between the body and the air around it
Diaphragm
sheet of muscle beneath the lungs and above the abdomen that contracts and relaxes to help the chest expand so a person can inhale or shrink so a person can exhale
red blood cells
makes up 1/2 of the bloods volume; contains hemoglobin
Hemoglobin
a substance found in red blood cells which carry and release oxygen
aorta
the bodys largest artery (blood vessel) carries blood away from heart
white blood cells
move throughout the blood; help defend the body against infection
platelets
move throughout the body; responsible for blood clotting
