bio lab 404

Right atrium

Receives deoxygenated blood from the body through the superior and inferior vena cava.

Right ventricle

Pumps deoxygenated blood to the lungs through the pulmonary artery.

Left atrium

Receives oxygenated blood from the lungs through the pulmonary vein.

Left ventricle

Pumps oxygenated blood to the body through the aorta.

Tricuspid valve

Prevents blood from flowing back from the right ventricle to the right atrium.

Pulmonary valve

Prevents blood from flowing back from the pulmonary artery to the right ventricle.

Mitral valve

Prevents blood from flowing back from the left ventricle to the left atrium.

Aortic valve

Prevents blood from flowing back from the aorta to the left ventricle.

Vena cava

Carries deoxygenated blood from the body to the right atrium.

Pulmonary artery

Carries deoxygenated blood from the right ventricle to the lungs.

Aorta

Carries oxygenated blood from the left ventricle to the body.

Pulmonary vein

Carries oxygenated blood from the lungs to the left atrium.

Right lung

Has two lobes, the upper and lower lobes.

Left lung

Has three lobes, the upper, lower, and lingula.

Alveoli

Tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged between the blood and the air.

Diaphragm

A dome-shaped muscle that separates the chest cavity from the abdominal cavity. It contracts to help inhale by increasing the volume of the chest cavity, and relaxes to help exhale.

Skeletal muscles

Attach to bones and are responsible for voluntary movement. Examples include biceps, triceps, and quadriceps.

Smooth muscles

Found in the walls of organs and are responsible for involuntary movements. Examples include muscles in the digestive system and blood vessels.

Cardiac muscle

Makes up the heart and is responsible for pumping blood throughout the body. It contracts and relaxes rhythmically.

Pulmonary circulation

The circulation of blood between the heart and the lungs. It carries deoxygenated blood from the right ventricle to the lungs, where it picks up oxygen and becomes oxygenated. Then, it carries oxygenated blood from the lungs to the left atrium.

Systemic circulation

The circulation of blood between the heart and the rest of the body. It carries oxygenated blood from the left ventricle to the body, where it delivers oxygen to tissues and removes carbon dioxide. Then, it carries deoxygenated blood back to the right atrium through the vena cava.