Inside the Human Body: Biology Made Easy

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inside the human body
Knowing what is inside the human body helps us understand our bodies better and what we have to do to look after ourselves.

Anatomy is a fascinating subject and getting to delve inside the human body allows for children to learn about their own bodies. Our bodies have multiple organs that have very specific functions. These functions are what keep us alive. Through delicate processes and functional operations, our bodies control our physical selves and allow us to breathe, run, and protect us. Learning about the inside of the human body is an important part of anatomy or biology. There are plenty of resources that help us explain and understand this science and how our bodies work. Biology can be made easy by communicating the details via creative content like video.

Inside the Human Body: The Heart

The heart is one of the most important organs in the human body. The heart’s main role in the body is to pump blood through the veins and the arteries to different parts of the body. Inside the human body, veins carry the blood to the heart and the arteries carry the blood away from the heart. The arterial blood contains oxygen, as the heart is the main source of oxygen dispensation in the body. Oxygen is integral from human survival, without it we will die. The heart and the lungs make up the circulatory system with a complex system of veins and arteries. These are integral for connecting the body to the heart, thus ensuring that our blood remains oxygenated and we are able to expend energy safely. Oxygen is what gives our bodies energy to participate in activities and function daily

An incredible organ, the heart manages to transport this blood inside the human body through pumping. The heart pumps by contracting and relaxing and it is made up of four chambers. These chambers are known as ventricles and atria. The chambers on the top level are called the left atrium and the right atrium. While the chambers at the bottom are referred to as the left ventricle and the right ventricle. These chambers have a specific purpose of keeping the oxygenated and deoxygenated blood separated. The rich oxygenated blood that flows from the lungs arrives into the left atrium and it is pumped out to the rest of the body from here. The deoxygenated blood flows into the right atrium and backs out into the right ventricle to the lungs. This appears like a loop and is the way the body is able to maintain oxygen.

Incredibly, these tasks are achieved all in one beat from the heart. The average heart rate of a human is 72 beats per minute. So, for the average person, when someone reaches 66 years of age, their heart would have beaten 2.5 billion times. An incredible achievement. Looking after your heart is integral to a happy and healthy life. In order to keep your heart healthy, you shouldn’t smoke, you should take regular exercise, eat lots of fruits and vegetables, and manage your intake for sugar and fats. The heart never stops beating, so that’s why we should ensure we are doing everything to protect it and keep it safe.

For us to be active, to help us breathe, and to make sure all our organs receive the blood and oxygen needed to function, we have the heart to thank for it. It is part of the circulatory system but acts as a control panel to make sure blood is being directed to the right places inside the human body. An incredible organ that simply can’t live without.

 

 

Human Skeleton Facts for Kids: The Bones

Inside the human body, there is a structure that holds us together. The structure is known as the skeleton and it is made up of a variety of bones that hold us all together and also protects our vital organs. Not only that, but the bones also manage to help us stand up straight and support the body’s physical functions. Bones are incredibly complex objects made up of many different materials. Inside the human body, 70% of our bones are made from hard minerals like calcium. Interestingly as well, the bones are traditionally broken down into four different parts: the periosteum, the compact bone, the cancellous bone, and the bone marrow.  The periosteum is the outer part of the bone and it is a thin, very dense layer that has nerves and blood vessels. The compact bone is very hard and smooth. The cancellous bone has the appearance of a sponge but is incredibly tough, despite its visuals. The bone marrow looks like a jelly-like substance and it has an incredibly important function as it makes new blood cells for the body.

When babies are born, they have more than 300 parts of bones. During the growing process, babies are learning ways to move their bodies that promote good and healthy function, this means that some of their bones haven’t fully developed. Most baby bones are made entirely or partly of cartilage which is slowly replaced with harder bones which is why weight gain can be significant in young babies and toddlers. Some of their bones join together as well to form one larger bone. By the time children are fully developed and they have reached adulthood, they end up having 206 bones inside the human body. 

The skeletal system is what helps us move and there are bones in the body that are specifically designed to allow for that to happen. Any place where two bones meet is called a  joint. There are a variety of joints, as some joints are fixed and, thus, do not move. Other joints move a little, like those little bones in the spine, then there are joints which move a lot, but require muscles to move. To ensure we keep our bones in good condition and shape, we need to eat healthy food that is rich in calcium and make sure that, as we exercise, we protect our bones accordingly. So, if you want to go cycling, make sure you wear a helmet. Our bones are so important inside the human body. They protect us, they let us move, and they serve important functions in cell creation.

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