respiratory system
a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages pharynx, trachea, bronchi and lungs
What is the respiratory system?
the system that circulates blood and lymph.
what is the circulatory system?
any of the muscular walled tubes forming part of the circulation system.
what are the arteries?
The part projecting above the mouth on the face of a person or animal, containing the nostrils and used for breathing and smelling.
What is the nose?
a hollow muscular organ that pumps the blood through the circulatory system.
what is the heart?
a large membranous tube reinforced by rings of cartilage.
what is the trachea?
a colorless odorless gas produced by burning carbon and organic compounds and by respiration.
what is carbon dioxide?
the red liquid that circulates in the arteries and veins of humans.
what is blood?
each of the pair of organs situated within the rib cage .
what are the lungs?
a tubular structure carrying blood through the tissues.
what are blood vessels?
a colorless reasive gas the chemical of atomic number 8 and the life-supporting component of the air
what is oxygen
any of the tubes forming port of the blood circulation system.
what are veins?