ANATOMY

Detailed explanation-1: -The two bottom chambers are the right ventricle and the left ventricle. These pump blood out of the heart. A wall called the interventricular septum is between the two ventricles. The two top chambers are the right atrium and the left atrium.

Detailed explanation-2: -Abstract. The brain controls the heart directly through the sympathetic and parasympathetic branches of the autonomic nervous system, which consists of multi-synaptic pathways from myocardial cells back to peripheral ganglionic neurons and further to central preganglionic and premotor neurons.

Detailed explanation-3: -The heart pumps blood along with the network of arteries and veins forming the ‘Cardiovascular system’. Hence, the Heart is the organ that pumps blood throughout the body.

Detailed explanation-4: -Each day, your heart beats around 100, 000 times. This continuously pumps about five litres (eight pints) of blood around your body through a network of blood vessels called your circulatory system. This blood delivers oxygen and nutrients to all parts of your body to help your organs and muscles work properly.