The Human Body: Facts, Charts, Diagrams, Prints

Human Anatomy Educational Prints

Are you teaching high school anatomy? Need to study for human body tests? Or need some human anatomy prints for your classroom? Here is a selection of human body charts, posters, and prints. Each can be ordered individually, or you can order them as a set. Whether you need them to be framed, matted or as is, you have the choice. Just click through the link below each picture for dimensions, and more information.

The human body is made up of a complex system of bones, muscles, organs, and tissues that enable us to breath, see, hear, think, work, and play, among other things. Everything works together like a well oiled machine, allowing us to carry out our daily activities. Here is a closer look at the various aspects of the human body that together, make it all work smoothly.

The Human Body: Muscular System

The human body has more than 639 skeletal muscles, making up about 40% of our body’s weight. It takes thirty of these muscles to make all of our various facial expressions work, allowing us to smile, smirk, frown, etc. We all have skeletal muscles, which are responsible for moving our bones.

Our smooth muscles carry out involuntary functions such as digesting our food and our breathing. Then there is the cardiac muscle, which is our heart muscle which keeps us alive. Our skeletal muscles contain striated muscle tissue, which is also present in such areas as the esophagus and tongue.

Without our muscular system, we could not breathe, move, blink, smile, or even swallow. Even the heart is a muscle that continuously pumps blood throughout our bodies for our entire lives.

The Human Body: Skeletal System

The skeletal system of the human body consists of all of its bones as well as the tendons, cartilage, and ligaments that connect them. The skeleton is responsible for holding our bodies up and providing support. Without our bones, we would be nothing but a large blob of tissue.

The skeleton also provides protection for all major internal organs such as the heart, brain, lungs, and spinal cord. Think of the skeleton as the framework to which the muscles attach.Our tendons then attach the muscle to the bone, enabling us to move. Interestingly enough, as an infant, the human body has approximately 300 bones. As our bodies mature, smaller bones fuse together to create larger bones so that the adult human ends up with around 206 bones.

The Human Body: Heart

Our hearts begin beating while we are still inside our mother’s womb, at around 21 days after conception. It continues to beat until the day we die, providing continuous blood circulation, second after second, minute after minute, day after day, through all the years of our lives.

The heart is one of the most vital organs in the body, and a muscle as well. The heart is made up of four main chambers, consisting of two upper chambers known as the right and left atria, and two lower chambers, the right and left ventricles. The atria receive the blood, while the ventricles discharge it into our blood stream.The heart is essential to our very survival, which is why it is important to eat heart healthy foods and get adequate exercise to keep it healthy.

The Human Body: Circulatory System

The circulatory system consists of the heart, blood, and blood vessels. Its job is to carry water, nutrients, and oxygen throughout the entire body. The circulatory system nourishes billions of cells in the body, and also carries away waste products such as carbon dioxide.

The Human Body: Digestive System

The digestive system works to turn the food we eat into energy the body needs to survive. It begins with the mouth where we chew our food, then goes to throat and onto the esophagus when we swallow, where the chewed food then ends up in the stomach.The stomach then grinds and breaks down the food with acid and enzymes, and then it is sent on to the small intestine. The small intestine then continues to break down the food with help from the pancreas, liver, and gallbladder.

Our bodies then absorb the nutrients from the food we ate, and then the leftovers in the small intestine are sent to the large intestine, or the colon. As the waste passes through the colon, it then enters the rectum, and is then eventually expelled through the anus.To summarize the entire process, the digestive system takes the food we eat and extracts the nutrients from it, where we then eliminate the leftover waste products through a bowel movement, or stool.

The Human Brain: Facts

An extremely complex organ, the brain is a jellylike mass that contains one hundred billion neurons. The brain forms connectivity between all of these cells at a rate of over one million connections for every single second of our lives.

This is the organ responsible for actions, feelings, and memories. The neurons communicate by releasing and capturing a variety of neurochemicals in the brain, such as endorphins, serotonin, glutamate, dopamine, and acetylcholine, which allow signals to be passed between neurons. The brain functions as the command center of all the processes of the human body. It processes thought and allows the body to respond to information it gathers from the senses.

The brain has three parts, the cerebrum, cerebellum, and brain stem. The cerebrum controls such senses as vision and touch. The cerebellum controls balance and coordination, and the brain stem links to the spinal cord and also works to control such functions as breathing, heartbeat, and digestion.

The Human Body: Nervous System

The nervous system acts as a communication and control system that sends and receives messages. It is made up of neurons, the brain, and the spinal cord. Neurons carry the messages, while the brain interprets them, and the spinal cord gathers information from nerves that branch out all over the body.

The Human Body: Respiratory System

The respiratory system is made up of the lungs, trachea, bronchi, and diaphragm. This system is responsible for breathing. It’s job is delivering oxygen to the body, while carrying away carbon dioxide. The trachea acts to filter the air we breathe, while the bronchi carry air to the lungs.

The Human Body: The Eye

The eye is an extremely complex organ responsible for our vision. It is made up of the cornea, iris, lens, pupil, and retina.The cornea focuses light much like the lens of a camera, while the iris controls the amount of light by adjusting the size of the pupil. The lens of the eye allows for the further focus of light.After the cornea and lens focus the light, it reaches the retina, which converts images into electronic signals which the optic nerve then transmits to the visual cortex area of the brain responsible for sight.

The Human Body: The Senses

The five senses of the human body include sight, hearing, taste, smell, and touch. The eye is the organ used for vision, the ear the organ used for hearing, the nose the organ used for smelling, the tongue and taste buds used for tasting, and the nerve endings in the skin and other body parts are used in the sense of touch.

The Human Body: Reproductive System

The female reproductive system consists of the ovaries, fallopian tubes, uterus, and vagina. The ovaries are responsible for producing the eggs and female hormone estrogen.

The male sperm travel through the female fallopian tube to reach a mature egg for possible fertilization. The fertilized egg will then implant in the female uterus where it develops into a fetus. The fetus will then be born and delivered into the world through the female vagina, also known as the birth canal.

The male reproductive system consists of the penis, testes, scrotum, vas deferens, prostate gland, and urethra. The testes produce the sperm and the male hormone testosterone.

The scrotum is a pouch of skin covering the testes that regulates the temperature of the sperm. The sperm travel from the testes through a tube known as the vas deferens, and exit the male’s body through the urethra in the penis.

The Human Body: Urinary System

The urinary system involves the two kidneys, bladder, two sphincters, ureter, and urethra. This system is responsible for making urine, storing it, and removing it as waste from the body.The kidneys removes a waste from the blood known as urea, where it then travels to the bladder. The sphincter muscles prevent the urine from leaking. When your nerves tell you it’s time to urinate, the urine passes through the urethra and is removed from your body.

The Human Body: Integumentary System

The integumentary system involves the skin, which is the largest organ in the body. Our skin helps to protect our internal structures, prevent dehydration, produces hormones and vitamins, and stores fat.The skin also helps with the regulation of body temperature, as well as acting as a barrier between germs and bacteria. This system consists of the epidermis, or outer layer of skin, the dermis, the layer underneath the epidermis, and the hypodermis, or innermost layer that provides insulation as well as a cushion for internal organs.

The human body acts as a well oiled machine as long as all of these complex systems are in proper working order. Take good care of your body, it’s the only one you’ve got!

Imelda Despres
 

Imelda Despres is our writer for the Baby, Health and Beauty categories. She was a nutritionist for 5 years before joining the InsideReviewed.com team. When she's not researching, she enjoys weekend getaways with her family at the lake.

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