The digestive system is a group of organs working together to convert food into energy and feed the entire body.

The digestive system works with the cardiovascular system as the passage of digested molecules passes through the capillary walls to be transported by blood throughout the body.

The digestive system has several stages. they are

Ingestion, propulsion, mechanical digestion, chemical digestion, absorption and defecation.

That is the process of eating food, the movement of food, the breakdown of that food, and then the removal of the food.

The circulatory system provides the brain with a consistent supply of oxygen-rich blood while the brain regulates your heart rate and blood pressure.

The system removes waste from cells and organs

There are different blood vessels. There are arteries, capillaries, and veins.

The endocrine system is a messenger system that regulates organs by releasing hormones directly into the circulatory system.

The hypothalamus is the control center for all endocrine systems in vertebrates.

The endocrine system moves hormones through the body. They are important functions, including growth, metabolism, and reproduction, to name a few.

The bones of the skeletal system protect the body’s internal organs, support the weight of the body, and serve as the central storage system for calcium and phosphorus.

The human body has 206 bones and 650 muscles'.

Muscles work with the circulatory and respiratory systems as it needs lots of resources to work efficiently

The primary functions of the skeletal muscles are to produce movement, sustain posture, store nutrients

The nervous system acts like the body's command center and sends messages or electrical signals between the brain and the rest of the body.

the system regulates complex things like memory and thoughts. The system plays an important role in blinking, blushing, and even sweating.

The nervous system can send messages faster than it takes us to have a thought

There are 4 types of neurons: sensory, motor, somatic, and autonomic. sensory deliver electrical signals from the outer body to the central nervous system, and motor carry from the central system to the outer body.