Breaks down food into nutrients for energy and growth.

Includes key organs such as the stomach, intestines, and liver.

Interacts with the circulatory system by absorbing nutrients into the bloodstream for distribution throughout the body.

Transports oxygen, nutrients, and hormones through blood vessels.

Composed of the heart, arteries, veins, and capililaries.

Interacts with the respiratory system by exchanging oxygen and carbon dioxide in the lungs to supply oxygenated blood to the body.

Facilitates gas exchange, bringing in oxygen and expelling carbon dioxide.

Includes lungs, trachea, and diaphragm.

Interacts with the nervous system by relying on brainstem control to regulate breathing rates based on oxygen and carbon dioxide levels.

Produces hormones that regulate metabolism, growth, and mood,

It includes glands such as the thyroid, adrenal, and pituitary glands.

Interacts with the nervous system by using hormones to communicate signals that control body functions, such as stress responses.

Provides structure, movement, and support to the body.

Composed of bones, muscles, tendons, and ligaments.

Interacts with the circulatory system by enabling movement that aids in blood circulation and heart function.

Controls the body's activities through electrical and chemical signals.

Includes the brain, spinal cord, and peripheral nerves.

Interacts with the muscular system by sending signals to initiate voluntary and involuntary movements.

Defends the body against infections and diseases.

Includes white blood cells, lymph nodes, and the spleen.

Interacts with the circulatory system by transporting immune cells through the bloodstream to fight infections.

Enables reproduction and continuation of species.

This includes organs such as the ovaries, testes, uterus, and prostate.

It interacts with the endocrine system by producing hormones like estrogen and testosterone that regulate reproductive functions.