IMG_2726.jpeg

# The Heart ## Introduction The primary function of the heart is to pump blood through the arteries, capillaries, and veins. This is essential for keeping blood circulating properly. The heart is the pump of the circulatory system and its anatomy includes the chambers, their vessels, the coronary...

# The Heart ## Introduction The primary function of the heart is to pump blood through the arteries, capillaries, and veins. This is essential for keeping blood circulating properly. The heart is the pump of the circulatory system and its anatomy includes the chambers, their vessels, the coronary blood vessels, the generation, regulation of the heartbeat and its relationship to the whole body. ## Amazing Facts about the Heart 1. The human heart begins beating just four weeks after conception, even before its nerve supply is formed, showcasing its vital role from the moment it begins. 2. The heart beats around 100,000 times a day, tirelessly pumping blood without a pause, demonstrating its remarkable endurance. 3. A healthy heart adjusts its rate and force to meet the body's oxygen needs during exercise or rest, showcasing its adaptability. 4. The heart pumps around 2,000 gallons of blood daily through arteries, capillaries, and veins, ensuring that every cell receives essential nutrients and oxygen. 5. The heart has its own electrical system that allows it to beat independently of the brain, highlighting its unique, self-sustaining nature. ## Discussion of Key Concepts * **Heart:** A hollow muscular cone-shaped organ made of cardiac muscle that receives and pumps blood through blood vessels. It has a pointed end (apex) directed downward, forward, and to the left of the mid-line just above the diaphragm. The human heart is about the size of a closed fist and beats approximately 75 times per minute. * **Artery:** Carries oxygenated blood away from the heart. * **Vein:** Carries deoxygenated blood toward the heart. * **Capillary:** The smallest of blood vessels that exchange nutrients, gases, and waste products. **Normal Heart Rate:** 60-100 bpm **Note:** 100,000 beats per day **Disclaimer:** All information contained in this document is the property of UCU and is for educational purposes only. Reproduction, storing, distributing, uploading, posting, or transmitting in any form or by any means is strictly prohibited without prior written permission.