What is the purpose of the circulatory system?

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

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

The substance that makes up the majority of blood is:

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

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

The components of blood that protect against pathogens is

Blood vessels carrying blood into the heart are:

Blood vessels carrying deoxygenated blood into the lungs are:

Which phase of an ECG signals when the ventricles contract?

Which phase of an ECG signals when the ventricles relax?

The pacemaker of the heart is the

Electrical fibres running through the ventricles are called

Arthropods have which type of circulatory system?

Leukocytes that are involved in inflammation are

Leukocytes that are involved in engulfing pathgens are

Blood vessels with valves to prevent backflow of blood are:

The part of blood that carries oxygen to cells is:

Blood vessels with extremely thin walls are:

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

Chemical digestion occurs mostly because of:

Ridges of hard tissue in the stomach lining are called:

The upper part of the oral cavity that allows for air passage when chewing is the:

Which things are produced in gastric pits?

The first part of the small intestine is the:

Water absorption occurs mainly in the

Chymotrypsin is a digestive enzyme that breaks down:

The exit of the stomach is a circular muscle called the

The loss of shape of an enzyme because of environmental conditions is called:

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

Glucose and amino acids enter the blood stream by the process of:

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:

Fibre is a type of:

The macronutrient that provides the most energy per molecule is:

Excess bile is stored in the:

Chronic inflammation in the digestive tract is typically classed as:

Bile is produced by the:

The function of bile is to:

Gas exchange takes place in structures called:

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

Singled cells organisms perform gas exchange through:

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:

What structures fill the nasal cavities?

The impulses to breathe come from the:

The impulses to inhale come from the:

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

The need to breathe comes from the monitoring of

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

Inhalation happens because:

Small branches of tubes that pass through the lungs are called:

Amphibians mainly do their gas exchange with: