Explanation:

The heart has 4 chambers, 2 upper chambers (atria) and 2 lower chambers (ventricles).The 4 heart valves are:
Tricuspid valve. This valve is located between the right atrium and the right ventricle.

Pulmonary valve. The pulmonary valve is located between the right ventricle and the pulmonary artery.

Mitral valve. This valve is located between the left atrium and the left ventricle. It has only 2 leaflets.

Aortic valve. The aortic valve is located between the left ventricle and the aorta.

Whereas the septum is a structure that separates the right from the left nasal cavity. It is the “hardware” in the middle of the nose, made of cartilage and bone.