Cardio
This organ pumps blood throughout the body.
The Heart
This organ is responsible for gas exchange.
Lungs
Skeletal Muscle
This system protects organs and supports the body.
Skeletal System
This system protects the body from disease.
Immune System
These blood vessels carry blood away from the heart
Arteries
These tiny air sacs allow oxygen and carbon dioxide to be exchanged.
Alveoli
This muscle is found in the walls of organs like the stomach.
Smooth Muscle
These structures connect bones to other bones.
Ligaments
These cells help fight infections.
White Blood Cells
This component of blood helps carry oxygen.
Red Blood Cells
This muscle helps the lungs expand and contract during breathing.
Diaphragm
Muscles attach to bones using these tough connective tissues.
Tendons
This is the longest bone in the human body.
Femur
These proteins help identify and neutralize pathogens.
Antibodies
The upper chambers of the heart are called these.
Atria
The process of breathing in is called this.
Inhalation
This muscle type makes up the heart.
Cardiac Muscle
This tissue inside bones produces blood cells.
Bone Marrow
This is the body’s response to harmful invaders, often causing redness or swelling.
Inflammation
This is the size of a heart
A fist
This gas is removed from the body during exhalation.
Carbon Dioxide
This process causes muscles to shorten and produce movement.
Contraction
This condition occurs when bones become weak and brittle.
Osteoporosis
This type of immunity occurs when an unvaccinated individual is surrounded by vaccinated individuals.
Herd Immunity