Printable Human Body Systems Worksheets
The human body is an unbeleiveable machine. It's amazing how all the body systems work together in unison and precision. These worksheets will help students to understand the function and structure of many human body systems.
- 20 Little Known Facts About The Human Body - A fun printable for students to ponder.
- Acrostic Poem
- Bank On It!
- Do The Research!
- Eat Your Heart Out New York Times!
- Group Creative Writing
- If I Were A.... ?
- I've got a feeling?
- Picking your teeth with DNA!
- Put yourself in Giligan's shoes?
- Reading Comprehension
- Ten Questions About The Human Body - See what your students know.
- The Cardiac 100
- The Nervous Security System
- Venn Diagram: Comparing Body Parts
- Vocabulary List & Definitions
- Vocabulary Quiz
- Word Chop
- Word Scramble
- Word Search
- Word Search
Human Body Bulletin Board
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- Anatomy Sites For Science Teachers
- Early Childhood Science
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- Health Sites To Use With Students
- How Stressed Is Your Child?
- Human Body Teaching Theme
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- Substance Abuse Lesson Plans
The 11 Human Body Systems
The human body is a complex machine made up of various systems that make it work. A system is a group of organs that work together to perform specific body functions that would enable the human body to live, move, grow, heal and survive.
Here is a list of the 11 systems of the human body.
1. Skeletal System
The skeletal system is made up of 206 bones and has a few functions:
- It gives the body form and structure.
- The bone marrow from bones generates new blood cells.
- Certain bones protect internal organs - the cranium protects the brain, and the rib cage houses the lungs and heart.
Some of the important bones are:
- Radius, Ulna and Humerus
- Fibula and Tibia
- Pelvic Bone
2. Muscular System
The human body is designed to move. That movement is a result of the muscular system working in conjunction with the skeletal and nervous systems. There are three kinds of muscles:
- Skeletal muscles are attached to bones. They can be controlled by the human mind and result in voluntary movements.
- Smooth muscles, or involuntary muscles, cannot be controlled and are found in the walls of internal organs.
- Cardiac muscles help in the circulation of blood (more in the Circulatory System)
Some of the major muscles are:
3. Circulatory System
The circulatory system is made up of the heart, the blood vessels and blood. The function is to transport nutrients and essential materials from the heart to all the parts of the body.
Think of the heart as a pump. The left side of the heart sends out oxygenated blood to the body and the right side of the heart takes in deoxygenated blood from the body and reoxygenates it.
Arteries, veins, and capillaries transport blood through the body. Arteries carry oxygenated blood to the body, while veins carry the ‘spent’ blood back to the heart to be oxygenated again. Capillaries help blood reach every nook and corner of the body.
4. Nervous System
The nervous system consists of the brain, spinal cord and sensory organs. The main function of the system is to control how the body interacts and reacts with the external environment and internal systems.
The main system is divided into two systems:
- The Central Nervous System (CNS) is the brain and the spinal cord. This system does the thinking for the human body; it gets information from the outside, processes it and then generates instructions on how to proceed.
- The Peripheral Nervous System (PNS) is made up of nerves and ganglia. It is responsible for the transmission of information between the CNS and the body.
5. Respiratory System
The major organs of the respiratory system are:
- Nasal Cavity
This system ensures that the lungs get oxygen from the air we inhale and exhale the carbon dioxide produced as a result of the breathing process.
Thi system also works closely with the circulatory system to ensure the distribution of nutrients and supplies critical for the body.
6. Digestive System
The food we consume doesn't stay in the same state when it enters the body. The digestive system is responsible for breaking down the food into smaller components so that they can be absorbed into the system.
The organs that are part of this process are:
- Small and Large Intestines
7. Lymphatic System
The human body has to be defended against infections and pathogens, and this defense is provided by the lymphatic system (also referred to as the immune system). Think of this system as millions of lymph vessels and nodes that cover the entirety of the human body, detecting damaged tissue that needs to be flushed out of the system.
8. Integumentary System
Not all systems are placed internally in the human body. The Integumentary System is a set of organs that makes up the outer layer of the body and acts as a protective barrier between the environment and the body.
- Hair and Nails
- Sweat Glands
- Sensory Receptors
9. Endocrine System
The Endocrine System is a collection of organs whose primary function is to produce hormones. These hormones control and manage the growth, development and metabolism of the human body.
Some examples are:
- Estrogen and Progesterone regulate menstrual cycles in women
- Adrenaline prepares the body for fight or flight response
- Insulin regulates the amount of sugar present in the bloodstream
10. Excretory System
Not all that humans consume can be beneficial for the body. On top of that, chemical processes taking place inside the body result in a certain amount of waste product as well. It is the Excretory System that ensures these unwanted byproducts are removed from the human body.
It is primarily the kidneys and the rectum that are responsible for this process.
11. Reproductive System
The purpose of the human body is not just to sustain itself and survive, but also to reproduce. This system is a set of reproductive organs that ensures the body has healthy reproductive organs and the right amount of hormones to execute this process.
The reproductive systems for males and females are different, and they both are made up of internal and external organs.
In the male reproductive system, the external organs are the penis and the testes. The internal organs are vas deferens, epididymis, prostate and seminal vesicles.
In the female reproductive system, the external organ is the vulva. The internal organs are the vagina, uterus, fallopian tubes and the ovaries.
The human body is able to move, grow, respond, heal, reproduce and do so much because of all of these systems working in tandem with each other. No system contributes completely on its own. Whether it's taking in important substances from the outside, breaking down more complex compounds into simpler chemical forms, or maintaining a healthy body, it is the abovementioned 11 human body systems that are at work.