Heart – This organ is made up of cardiac muscle which allows its pumping action. It is divided into four chambers. The two chambers on the top are called atria and the other two on the bottom are called ventricles. It also has 4 valves which prevent the backflow of blood. The heart functions to pump oxygen, blood and hormones to the different parts of the body. It receives deoxygenated blood and maintains blood pressure.
Blood – This is a connective tissue for it has a matrix and comes from the mesodermal cells. It has liquid and sold components. The liquid portion is the plasma which is also the matrix. The solid components include the RBCs, WBCs and platelets. The RBCs have the pigment hemoglobin and can carry 4 oxygen molecules. WBCs defend the body from foreign substances. The different types of WBC include neutrophil, eosinophil, basophil, monocyte and lymphocyte. The platelet plays a role in blood clotting.
Elastic fibers in artery – this allows the artery to expand and contract. The contraction is read as systole and when it expands or relaxes it is read as diastole. It provides elasticity and resilience to the arteries. This is usually located in the aorta and pulmonary arteries which are near the heart. It helps in the maintenance of the blood pressure in those arteries.
Heart – This organ is made up of cardiac muscle which allows its pumping action. It is divided into four chambers. The two chambers on the top are called atria and the other two on the bottom are called ventricles. It also has 4 valves which prevent the backflow of blood. The heart functions to pump oxygen, blood and hormones to the different parts of the body. It receives deoxygenated blood and maintains blood pressure.
Blood – This is a connective tissue for it has a matrix and comes from the mesodermal cells. It has liquid and sold components. The liquid portion is the plasma which is also the matrix. The solid components include the RBCs, WBCs and platelets. The RBCs have the pigment hemoglobin and can carry 4 oxygen molecules. WBCs defend the body from foreign substances. The different types of WBC include neutrophil, eosinophil, basophil, monocyte and lymphocyte. The platelet plays a role in blood clotting.
Elastic fibers in artery – this allows the artery to expand and contract. The contraction is read as systole and when it expands or relaxes it is read as diastole. It provides elasticity and resilience to the arteries. This is usually located in the aorta and pulmonary arteries which are near the heart. It helps in the maintenance of the blood pressure in those arteries.