Human Body System Study Guide

Nervous System
The nervous system is your body’s central control system and helps maintain homeostasis. Major organs Brain, nerves, spinal cord, and peripheral.
Skeletal System
Protects and supports body organs, and provides a framework the muscles use to cause movement. Blood cells are formed within bone. The major organs are the vertebrae, joint, cartilage, and marrow
Muscular System
The systems function is to control voluntary and involuntary movements. The major organs are cardiac muscle, smooth muscle, and skeletal muscle.
Respiratory System
Keeps blood constantly supplied with oxygen and removes carbon dioxide. The major organs are nose, pharynx, trachea, epiglottis, larynx, bronchus, and lung.
Digestive System
The process by which your body breaks down food into small nutrients molecules. The major organs are mouth, salivary glans, epiglottis, esophagus, liver, stomach, gallbladder, and pancreas.
Immune System
The systems function is to fight off diseases and infections in the body. The major organs are adenoids, tonsils, thymus, spleen, bone marrow, lymph nodes, lymphatic vessels, and appendix.
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Excretory System
The systems function is to filter out waste from the body. The major organs are kidney, ureter, urinary, bladder, and urethra.
Circulatory System
The systems function is to cycle rich and poor oxygen blood through the body, and to carry waste products away from the cells. The major organs are the heart and blood vessels.
Nervous Systems Major Organs
Skeletal Systems Major Organs
Muscular Systems Major Organs