What is the Body Systems?

The smallest units in the body are CELLS, which share certain characteristics. These tiny structures are collected into TISSUES, which are themselves arranged into ORGANS. Different body systems consist of collections of cells, tissues, and organs with a common purpose.

What are the types of the Body Systems?

The Circulatory

Immune

Skeletal

Excretory

Muscular

Endocrine

Digestive

Nervous

and Respiratory

Circulatory Systems

The system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands

The main function of the circulatory system is to move blood and lymph through the body. Doing this transports nutrients and oxygen to the cells of the body and removes waste products such as carbon dioxide. The circulatory system is necessary to regulate temperature and pH balance and protect the body from diseases.

Immune Systems

 A network of cells, tissues, and organs that work together to defend the body against attacks by “foreign” invaders. These are primarily microbes—tiny organisms such as bacteria, parasites, and fungi that can cause infections.

The main function of the immune system is to protect the human body against disease and other foreign bodies. The human immune system is a complex system that can identify threats to human health, distinguish these threats from the body’s own healthy tissues and eradicate these threats to keep humans healthy.

Skeletal Systems

The framework of the body, consisting of bones and other connective tissues, which protects and supports the body tissues and internal organs. The human skeleton contains 206 bones, six of which are the tiny bones of the middle ear (about three in each ear) that function in hearing.

The skeletal system also provides support and protection for the soft tissue that makes up the rest of the body. Red blood cells form within the bone marrow, which also contains millions of cells, protein fibers and minerals.

Excretory System

The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body.

The excretory system is a collection of organs tasked with removing excess nitrogen and other toxins from the body. The kidneys, liver and large intestine perform most of the filtration duties. Solid waste passes out through the colon, gaseous waste exits the body through the lungs and excess liquid leaves through the bladder and skin.

Muscular Systems

The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body.

The two major functions of the muscular system are the ability to make the body move and the posture of the body. The muscles enable the arms, legs and other parts of the body to move while keeping the body in an upright or sitting position without falling over.