List of 9 Human Body Organ Systems for kids

A Human body system is a group of organs that work together to serve a common goal. For example, your cardiovascular system works to circulate your blood while your respiratory system introduces oxygen into your body.

Sometimes we get lost while exploring cells and molecules and can’t see the forest for the trees. It can be useful to step back and look at the bigger anatomical illustration.

This post will briefly introduce the human body’s systems so that every organ you know later will add a superstructure to the basic concept you adopt here.

The nine major organ systems in the human body are:

  • The integumentary system.
  • The musculoskeletal system.
  • The respiratory system.
  • The circulatory system.
  • The digestive system.
  • The excretory system.
  • The nervous system.
  • The endocrine system.
  • The reproductive system.

Human Body Organ Systems for kids

Circulatory system / Cardiovascular system

The circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen. The heart then sends pure oxygen mixed blood through arteries to the rest of the body.

Finally, the veins take oxygen-poor blood back to the heart to initiate circulation again. It is also called the cardiovascular or vascular system and provides oxygen, nutrients, and hormones to your body’s cells for energy, growth, and repair.

In addition, it removes carbon dioxide and other wastes that your cells do not need.

Digestive system and Excretory system:

The digestive system removes waste and unwanted items from the body. It breaks down your food into nutrients that provide energy and building materials for cells.

The digestive work together to process the food you eat. The digestive system includes the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus.

It also includes the salivary glands, liver, gallbladder, and pancreas, which make digestive juices and enzymes that help the body digest food and liquids.

Endocrine system

The endocrine systems, also known as hormone systems, are found in all mammals, birds, fish, and other living organisms.

It is a complicated network of glands and organs that uses hormones to control and harmonize your body’s metabolism, growth and development, energy level, and reaction to injury, stress, and mood.

These glands, located all over your body, create and release hormones. Hormones are chemicals that coordinate different body functions by taking directives via your blood to your organs, skin, muscles, and other tissues.

These signals tell your body what to do and when to do it.

Integumentary system

There are four types of glands in the integumentary system: sudoriferous (sweat) glands, sebaceous glands, ceruminous glands, and mammary glands.

These are all Integumentary glands that discharge all waste outside the cells and human body. For example, sudoriferous glands are sweat-producing glands. Your integumentary system is your body’s outer layer.

It includes your skin, hair, nails, and glands. These organs and structures are your first line of defense against bacteria and help protect you from injury and sunlight.

In addition, your integumentary system works with other systems in your body to keep it balanced. For example, the integumentary system includes the epidermis, dermis, hypodermis, associated glands, hair, and nails.

In addition to its barrier function, this system performs many intricate functions such as body temperature regulation, fluid cell maintenance, synthesis of Vitamin D, and detection of stimuli.

Immune system

The immune system comprises special organs, cells, and chemicals that fight infection (microbes). Your immune system is a large network of organs, white blood cells, proteins (antibodies), and chemicals.

It works together to protect you from bacteria, viruses, parasites, and fungi that cause infection, illness, and disease. The immune system includes the thymus, bone marrow, and lymph nodes.

Muscular system

A muscular system is a group of specialized cells called muscle fibers. Their principal function is contractibility.

All your muscles are attached to your bones or internal organs and blood vessels and are responsible for human body movements. Nearly all movement in the body is the result of muscle contraction.

Nervous system

Arising from your brain, it controls your body movements, ideas, and automatic reactions to the world around you.

In addition, it controls other body systems and processes, such as digestion, breathing, and sexual development (puberty). It controls everything you do, including breathing, walking, thinking, and feeling.

This system contains your brain, spinal cord, and all the nerves of your body. The brain is the command center, and the spinal cord is the primary route to and from the brain to your body.

Renal system / Urinary system

The urinary system’s function is purifying blood and creating urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder, and urethra. In addition, the body takes nutrients from food and converts them to energy.

The kidneys remove waste and extra fluid from the blood to make urine. The urine flows from the kidneys via the ureters to the bladder. Therefore, the urinary system includes the kidneys, ureters, bladder, and urethra.

It filters your blood, removing waste and excess water from your body. The system is divided into two parts – The upper urinary system includes the kidneys and ureters. The lower urinary system contains the bladder and urethra.

Reproductive System

The tissues, glands, and organs involved in producing offspring (children). In women, the reproductive system includes the ovaries, the fallopian tubes, the uterus, the cervix, and the vagina.

In men, it includes the prostate, the testes, and the penis. Its main function is to produce egg and sperm cells. Next, to transport and sustain these cells. Finally, to nurture the developing offspring.

Respiratory system

A respiratory system is a group of organs and tissues that work together to help you breathe. It contains your airways, lungs, and blood vessels.

The respiratory system’s primary function is to carry oxygen into your body while removing waste gases. The lung is the respiratory system’s main organ, which carries out this exchange of gases as we breathe.

In addition, the lungs work with the circulatory system to pump oxygen-rich blood to all cells in the body.

The skeletal system

The skeletal system is your body’s main bone structure. It included many bones and supportive tissue, including cartilage, tendons, and ligaments. It’s also called the musculoskeletal system.

The adult human skeleton is made up of 206 bones. These include the bones of the skull, spine (vertebrae), ribs, arms, and legs. Bones are made of connective tissue supported with calcium and specialized bone cells.

Most bones also contain bone marrow, where blood cells are made. Human Bones provide shape and support for the body and work as a shield for some body organs.

It also serves as a mineral storage site and delivers the medium bone marrow for developing and holding blood cells.

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