The Heart, Part 1 - Under Pressure: Crash Course Anatomy & Physiology #25

The heart is an essential organ that powers the circulatory system and maintains pressure but does not govern emotions like love. It is described as a hardworker but lacking in emotional capacity.

The heart is located in the center of the chest, slightly angled towards the left hip. It is encased in a protective double-walled sac called the pericardium, providing structural support.

The heart wall consists of the epicardium, myocardium, and endocardium layers. These layers work together to facilitate the pumping action of the heart.

The heart is divided into four chambers with corresponding valves that regulate blood flow. Atria receive blood, while ventricles discharge blood, showcasing the functional aspects of the heart chambers.

The process of blood circulation in the heart involves the movement of blood through the chambers, valves, veins, and arteries to maintain circulation throughout the body. The high and low pressures created in the heart aid in efficient blood flow.

Blood flows from the heart through the pulmonary arteries to the lungs for oxygenation, then returns to the heart via the pulmonary veins. This oxygenated blood is then pumped out to the body through the aorta, continuing the circulation process.

The heart regulates blood pressure through systole and diastole, maintaining a balance between high and low pressures. Abnormal blood pressure levels can have detrimental effects on the body's circulation and overall health.