cells

tissues and

organs

that together

Make life possible

Ten major systems are responsible for the body's functions

skeletal muscular

cardiovascular

nervous

endocrine

lymphatic

respiratory digestive urinary

Reproductive

The skeletal muscular

cardiovascular and nervous systems in particular

create an infrastructure that facilitates the other systems the

Adult skeletal system is a framework of over 200 bones

They hold the body together give it shape and protect its organs and tissues

The skeleton also provides anchor points for the muscular system, which includes three types of muscles skeletal

smooth and cardiac

They are found throughout the body and facilitate movement

Nestled within these muscles is the cardiovascular system a pipeline that includes the heart blood vessels and the blood itself

also called the circulatory system the

cardiovascular system delivers oxygen white blood cells hormones and nutrients throughout the body

Lastly the nervous system is a communication network of nerve cells that the body uses to transmit information and coordinate

bodily functions

It's comprised of the brain the hub of sensory and intellectual activity the spinal cord

And the many cranial and spinal nerves that emanate from them

This infrastructure created by neurons blood muscles and bones

Allows three other systems to regulate the body's environment the endocrine lymphatic and urinary systems

The endocrine system is a series of glands that use information carried by the nervous system to help regulate the body's

processes

Thanks to this neural connection endocrine glands such as the thyroid are aware of the amount of hormones and other chemicals

They need to produce

these chemicals are then distributed throughout the body by way of the cardiovascular system the

cardiovascular and nervous systems are also utilized by the lymphatic system a

collection of lymph nodes and vessels that help regulate the body's defenses

Also called the immune system the lymphatic system uses neural pathways to transmit information

About affected areas of the body and then sends out healing agents like white blood cells via the blood stream

Another key, regulatory system is the urinary system, which includes the kidneys ureters bladder and urethra

The urinary or renal system maintains the body's electrolyte levels and filters wastes from the blood

This waste is sent through the blood vessels into the kidneys and then expelled as urine

All of these systems require energy to function and that's where the respiratory and digestive

Systems come in

The respiratory system is a group of passageways and organs that extracts life-giving oxygen from the air we breathe

Air enters the body through nasal cavities travels down the throat and is then transported to the lung

The lungs extract oxygen for the body to use and then expel a carbon dioxide by-product when we exhale energy

Can also come in the form of food?

The digestive system is an approximately 30 foot series of organs that convert food into fuel

Food enters the system through the mouth then moves into the esophagus the stomach and the intestines

Nutrients are absorbed into the body while solid waste is expelled through the anal canal the end of the digestive tract

No matter the roll size or shape of any of the body systems each began with a reproductive system

This system is responsible for creating life

the primary organs involved differ between the sexes with ovaries fallopian

Tubes the uterus and vagina found in women and testes and a sperm channel found in men together

Fertilization may occur organ systems form and then a child is born

Humans are complicated organisms

But when our 10 major organ systems are healthy

They ensure our well-being

You