Cardiovascular System
The cardiovascular system is responsible for transporting blood throughout the body. It is made up of the heart, which pumps blood, and the blood vessels, which carry blood to and from the heart.
The cardiovascular system plays a vital role in keeping the body healthy by delivering oxygen and nutrients to cells and removing waste products from the body.
The heart is a muscular organ that pumps blood through the body. It is about the size of a fist and is located in the chest, behind the breastbone.
The heart has four chambers: the left and right atria, which are the upper chambers, and the left and right ventricles, which are the lower chambers. The atria receive blood from the body and pump it into the ventricles. The ventricles then pump blood out of the heart and into the arteries.
The arteries are blood vessels that carry blood away from the heart. They are made up of smooth muscle tissue that contracts and relaxes to help keep blood flowing through them. The arteries branch out into smaller and smaller blood vessels called arterioles. The arterioles lead to the capillaries, which are the smallest blood vessels in the body.
The capillaries are where the exchange of oxygen and nutrients between the blood and the cells takes place. Oxygen-rich blood from the arteries enters the capillaries and diffuses into the cells.
At the same time, carbon dioxide and other waste products from the cells diffuse into the blood in the capillaries. The blood then flows through the venules, which are small veins, and into the larger veins that lead back to the heart.
The cardiovascular system is an important part of the body's overall health. It helps to deliver oxygen and nutrients to cells and remove waste products from the body. By keeping the blood flowing, the cardiovascular system helps to keep the body healthy.
Cardiovascular System Topics
Heart
Stay young at heart... The heart is a muscular organ about the size of a fist, located in the chest. The heart pumps blood through the network of arteries and veins called...
Blood
Every drop helps... Blood is a bodily fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports...
Veins
Pumping through your veins... Veins are the blood vessels that carry deoxygenated blood from other parts of the body back to the heart. Most veins are relatively small, but some,...
Arteries
Give your body oxygen-rich blood from the heart to the rest of the body! Arteries are the blood vessels that carry oxygen-rich blood from the heart to the body's tissues. Arteries are often referred to as "the pipes" of...
Capillaries
Protect your capillaries from damage... Capillaries are the smallest of a body's blood vessels and are only one cell thick. They connect the arterioles and venules, and their main function...
Books discussing Cardiovascular System
Alignment Matters
A revised edition of The First Five Years of Katy Says
Nov 09, 2016 | 611 PagesBiomechanist Katy Bowman started her blog "Katy Says" in 2007 to educate people about optimal alignment and natural movement. Thousands of people have benefited from her advice. "Katy Says" may have ended, but you can still follow her work through this collection of the first five years of her short essays. Each essay is categorized by body...Learn more about Alignment Matters
A Journey of Discovery into Redox Signaling Biology
Aug 09, 2018 | 266 PagesJoin Dr. Gary Samuelson, the renowned atomic medical physicist, on a journey into the captivating world of redox signaling! This ebook is written in simple language and includes stunning illustrations to make comprehension of life at its most fundamental level possible for everyone - be they scientists or not! This informative presentation is...Learn more about A Journey of Discovery into Redox Signaling Biology
Experts discussing Cardiovascular System
Katy Bowman
A biomechanical scientist, author, and educator. She has several books on the value of re-introducing movement into our daily lives.Katy Bowman is a New York Times bestselling author, international speaker, and leader of the movement encouraging people to get up and move. By changing the way we view exercise, Katy hopes to create a healthier world. Nutritious Movement, her movement education company based in Washington State strives to achieve this...Learn more about Katy Bowman
Dr. Gary L. Samuelson, Ph.D.
Atomic medical physicist, with a specialty in nanotechnology and signaling.Dr. Samuelson has earned his Ph.D. in Atomic Medical Physics from the University of California San Diego, in addition to his Master of Science degree in Nanotechnology from Stanford University. He also holds certification as a Certified Redox Signaling Molecule Technician, helping him to better understand redox...Learn more about Dr. Gary L. Samuelson, Ph.D.