Circulatory/respiratory system Flashcards
Cilia
The tiny hairs that clean the air
Trachea
The tube that connects carries air from the larynx to the lungs
Diaphragm
The large band of muscle that controls the size of the chest cavity located between the chest and the abdomen
Lungs
The two large light weight organs of the respiratory system
Bronchioles
The many little branches of the respiratory system
Larynx
The part of the respiratory system that is the voice box
Alveoli
The grape like clusters of air sacs in the lungs
What are the three things carried by the blood
Oxygen, nutrients, hormones
Role of the arteries
Carries blood away from the heart
Oxygen
What we breathe in
Role of the veins
Returns blood to heart
Role of the capillaries
Transports blood, nutrients, and oxygen to the cells in your organs. Also takes waste product away from your tissues. also connects the arteries and veins
Carbon dioxide
Waste product given off in the gas exchange between air and blood in the alveoli
The role of valves in blood vessels
The valves help the return of blood to the heart by opening when the blood flows toward the heart and closing when blood might flow backward
Gas exchange
Gas exchange occurs in the alveoli. It is the process of oxygen diffusing from the alveoli to the blood flow in the capillary, and carbon dioxide diffusing from the blood into the alveoli to be exhaled