Circulatory & Respiratory Anatomy

Why does the heart sit more to the left of your chest?

What is one of the major veins called?

What blood cells carry the oxygen and the carbon dioxide?

Oxygen is absorbed by what in the capillaries?

Why do we, as humans, need lungs instead of using simple diffusion?

What is the point of the lowest pressure in the circulatory system?

What is the bundle of muscles called that helps lungs inhale/exhale?

As pressure in our lungs goes down, _______________________?

Where does the energy used for diaphragm and your heart come from?

What process allows animals with no lungs to take in oxygen?

How many chambers does the human heart have?

What are the capillaries switching out in place of oxygen?

Where did lungs first appear in the animal kingdom?

Which direction do arteries flow?

In order for oxygen to pass through the membrane, the membrane must be what?

What is the main difference between veins and arteries?

What covers the alveoli?

Human lungs contain ________ sq ft of oxygen dissolving membrane?