What is the name for the circulatory system that moves blood to and from the lungs?

The substance that makes up the majority of blood is:

The components of blood that aids the most in blood clotting is

The components of blood that protect against pathogens is

Blood vessels carrying blood into tissues where materials can be exchanged by diffusion are:

Blood vessels carrying deoxygenated blood into the lungs are:

The pacemaker of the heart is the

Blood vessels with extremely thin walls are:

The part of blood that carries oxygen to cells is:

The method used to move food through the digestive system is called:

Chemical digestion occurs mostly because of:

Which things are produced in gastric pits?

The first part of the small intestine is the:

Water absorption occurs mainly in the

Fats are mostly absorbed into structures called

Small structures in the small intestine that absorb nutrients are called:

Most digestive enzymes are produced by the:

Nutrients absorbed in the digestive system all pass through this organ first:

Food that exits the stomach is referred to as:

Chronic inflammation in the digestive tract is typically classed as:

Gas exchange takes place in structures called:

Gas exchange in the lungs happened primarily by the process of:

The tube that leads into the lungs is called the:

The diaphragm contracts during

Accessory muscles for breathing are the:

Air is drawn into the lungs because:

The brain knows we need to breathe faster by monintoring the amount of _____ in blood.

Sound is made when air passes over flaps of cartilage in the

Inhalation happens because:

Damaged and ruptured air sacs in the lungs cause: