Circulatory System
What organ pumps blood through your body?
The heart!
Where does digestion begin?
The mouth!
What two gases are exchanged when you breathe?
Oxygen and carbon dioxide
What connects muscles to bones?
Tendons!
How many bones are in the adult human body?
206!
What do arteries do?
They carry blood away from the heart.
What is the long tube that moves food to the stomach?
The Esophagus!
What are the tiny air sacs in the lungs?
Alveoli
What type of muscle is found in the heart?
Cardiac muscle!
What part of the bone makes blood cells?
Bone marrow!
What type of blood cell fights germs?
White blood cells
What is the small intestine’s job?
To absorb nutrients
What muscle helps you breathe by flattening and expanding your lungs?
The diaphragm!
What do motor nerves do?
They send signals from the brain to muscles
What organ filters waste from your blood in the excretory system?
The kidneys!
What are the two types of circulation in the body?
Pulmonary circulation and systemic circulation
What keeps food from going down your windpipe?
The epiglottis!
What filters air in your nose?
Cilia and mucus
What are the two main parts of the nervous system?
Central and peripheral nervous systems
What is the main function of the excretory system?
It removes liquid waste from your body!
What is the name of the liquid part of blood that carries cells?
Plasma
What organ removes water and forms waste?
The large intestine (colon)
What is the correct path of air to the lungs?
Pharynx → larynx → trachea → bronchi → bronchioles → alveoli
What is the difference between voluntary and involuntary muscles?
Voluntary muscles are controlled; involuntary muscles move on their own
What does the skeletal system protect? (Name 2 things)
Brain and heart (or internal organs)