The human body is either studied by regions or by organs systems. This book uses the organ system approach in which individual organs (such as bones) are grouped into the larger organ system (for example, the skeletal system). Typically eleven organ systems are described. The skeletal system consists of all of the bones of the body. Examples are the femur and the humerus. The nervous system consists of the nerves, spinal cord, and brain while the lymphatic system consists of lymph glands, conducting tubes called lymphatics, and organs such as the spleen. The term immune system is more of a functional classification and will not be treated as a separate system here. The muscular system consists of individual skeletal muscles as organs such as the pectoralis major and deltoid. Label the organ systems underneath each illustration and label the selected organs by using the terms available. When you finish, select different colors for each organ system and color them in.

Organ System

Skeletal system Nervous system Lymphatic system Muscular system


Femur Nerves

Lymph glands Pectoralis major


Humerus Spinal cord Spleen Deltoid



Muscular Organ System
C. .
Lymphatic Glands LabelingHuman Spinal Cord

Answer Key:

a. Humerus, b. Femur, c. Skeletal, d. Brain, e. Spinal cord, f. Nerves, g. Nervous, h. Spleen, i. Lymph nodes, j. Lymphatic, k. Deltoid,

I. Pectoralis major, m. Muscular

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