Our Body; the human body, is a complex organization that has an important job to get done on a tight deadline. In order to get everything done perfectly and on time it has to use a system. Actually, the human body uses many systems that work side by side.

Visitors to OUR BODY:

Visitors to OUR BODY: THE UNIVERSE WITHIN will journey through a fascinating tour of the human body as a whole, then taken through each of the bodily system specimens to see first hand how each functions and also relates to all the other systems. This extraordinary exhibition was designed to educate, enlighten, and allow all who attend to understand the complexities of OUR BODY. Journey with us to view actual human bodies and specimens. Journey with us to see the amazing specimens of bones, blood vessels, nerves, muscles, hearts, livers….all of the human organs we all have. See and learn about your body…and how each system supports the other.


The human body contains more than 650 individual muscles which are attached to the skeleton, which provides the pulling power for us to actually move around. The primary function of the muscular system is to provide movement for the body. The muscular system consists of three different types of muscle tissues: skeletal, cardiac and smooth. Each of these different tissues has the ability to contract, which allows body movements and functions. There are two types of muscles in the system and they are the involuntary muscles and the voluntary muscles. Involuntary muscles we cannot control, and voluntary muscles we can control. They all allow the human body to move like a well-oiled machine.


THE SKELETAL SYSTEM:The Skeletal system determines the shape of our body and protects its organs. It works in concert with the muscular system. The Skeletal system is made up of all your bones, ligaments, and tendons. It determines the shape and symmetry of the body; acts as a protective device for your organs and acts as a firm base for the attachments of all our muscles. Without bones, your muscles would not function properly.

The skeletons of men and women are similar; however the female skeleton is a bit lighter and smaller and includes a wider pelvis for birthing.


Our body’s circulatory system really has three distinct parts: pulmonary circulation (The Lungs), coronary circulation (The Heart), and systemic circulation (all the rest!). Each of these parts must be working independently in order for them all to work together.

On average, our body has approximately five liters of blood continually traveling through it by way of the circulatory system. The heart, the lungs and the blood vessels work together to form the circulatory system. Your heart pumps and forces the blood on its journey throughout your body.


NERVOUS SYSTEMThe nervous system of the human body is responsible for sending, receiving and processing nerve impulses throughout our body. All of the organs and muscles inside our bodies rely upon these nerve impulses to function. It is, literally, the master control unit of our body. The brain and the spinal cord make up the central nervous system. Sense organs provide the nervous system with information about the environment by means of the five senses; sight, hearing, smell, taste and touch. Nerves are connected throughout the body to the brain. They carry the information throughout the body in the form of electrochemical signals called impulses. These impulses travel from the brain and spinal cord to the nerves. The brain is largely made up of specialized cells called neurons. Each of these neurons has a cell body, or cyton, which contains the nucleus and organelles. It takes the cooperation of three systems to carry out the mission of the nervous system: The central, the peripheral and the autonomic.

NERVOUS SYSTEMThe central nervous system has the responsibility for issuing nerve impulses and analyzing sensory data, and includes the brain and spinal cord.

The peripheral nervous system is responsible for carrying these nerve impulses to and from the nerves branching off the brain and spinal cord.

The autonomic nervous system is comprised of the sympathetic and parasympathetic systems and is responsible for regulating and coordinating the functions of vital structures in our body.


THE DIGESTIVE SYSTEMThe Digestive System contains organs for changing the food we eat chemically, for absorption by our body tissues. It is also responsible for processing food, and breaking it down into usable protein, minerals, carbohydrates and fats and other substances. The digestion process involves breaking food down into simple soluble substances absorbable by tissues.

The digestion process begins in your mouth when you start eating. The salivary glands produce secretions that are mixed with the food. The saliva breaks down starches into dextrin and maltose. Then it goes down your esophagus in peristaltic waves to the stomach. This only takes a matter of seconds. The stomach contains gastric juice and the gastric juice contains chemicals such as hydrochloric acid and some enzymes, including pepsin, rennin, and lipase.

THE DIGESTIVE SYSTEMPepsin breaks proteins into peptones and proteases. Rennin separates milk into liquid and solid portions, and lipase acts on fat. Another function of stomach digestion is to gradually release materials into the upper small intestine, where digestion is completed.

After the solid food has been digested, the fluid remaining is called chyme. When it is thoroughly digested it passes through the pylorus sphincter to the small intestine. Here in the small intestine all the nutrients are absorbed from the chyme into the bloodstream leaving the rest as unusable residue. This residue passes through the colon or large intestine to the rectum. The solid waste, called feces, then passes through the canal and the anus.


THE RESPIRATORY SYSTEMThe primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all the different parts of the body. The respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide. This exchange of gases is the respiratory system’s means of getting oxygen to our blood.

THE RESPIRATORY SYSTEMRespiration is achieved through the mouth, nose, trachea, lungs and diaphragm. Oxygen enters the respiratory system through the mouth and the nose. The oxygen then passes through the larynx (where speech is produced) and the trachea which is the tube that enters the chest cavity. In the chest cavity, the trachea splits into two smaller tubes called the bronchi. Each bronchus then divides again, thus forming the bronchial tubes. The bronchial tubes head directly into the lungs where they divide into many smaller tubes which connect to tiny sacs called Alveoli. The average adult’s lings contain approximately 600 million of these spongy, air-filled sacs that are surrounded by capillaries. The inhaled oxygen passes into the alveoli, and then diffuses through the capillaries into the arterial blood. At the same time, the waste-rich blood from the veins releases the carbon dioxide into the alveoli. The carbon dioxide follows the same path out of the lungs when you exhale.

The diaphragm’s job is to help pump the carbon dioxide out the lungs and pull the oxygen into the lungs. The diaphragm is a sheet of muscles that lies across the bottom of the chest cavity. As the diaphragm contracts and relaxes, breathing takes place. When the diaphragm contracts, oxygen is pulled into the lungs. When the diaphragm relaxes, carbon dioxide is pumped out of the lungs.


THE REPRODUCTIVE SYSTEMThe major function of the reproductive system is to ensure survival of the species. Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for survival of the individual. An individual may live a long, healthy, and happy life without producing offspring, but if the species is to continue, at least some individuals must produce offspring. Within the context of producing offspring, the reproductive system has four functions:

• To produce egg and sperm cells
• To transport and sustain these cells
• To nurture the developing offspring
• To produce hormones

These functions are divided between the primary and secondary, or accessory, reproductive organs. The primary reproductive organs, or gonads, consist of the ovaries and testes. These organs are responsible for producing the egg and sperm cells, (gametes), and for producing hormones. These hormones function in the maturation of the reproductive system, the development of sexual characteristics, and have important roles in regulating the normal physiology of the reproductive system. All other organs, ducts, and glands in the reproductive system are considered secondary, or accessory, reproductive organs. These structures transport and sustain the gametes and nurture the developing offspring.

The male reproductive system, like that of the female, consists of those organs whose function is to produce a new individual, i.e., to accomplish reproduction. This system consists of a pair of testes and a network of excretory ducts (epididymis, ductus deferens (vas deferens), and ejaculatory ducts), seminal vesicles, the prostate, the bulbourethral glands, and the penis.

• Testes
• Duct System
• Accessory Glands
• Penis
• Male Sexual Response and Hormonal Control

The organs of the female reproductive system produce and sustain the female sex cells (egg cells or ova), transport these cells to a site where they may be fertilized by sperm, provide a favorable environment for the developing fetus, move the fetus to the outside at the end of the development period, and produce the female sex hormones. The female reproductive system includes the ovaries, Fallopian tubes, uterus, vagina, accessory glands, and external genital organs. Select a topic below to learn more about the female reproductive system.

• Ovaries
• Genital Tract
• External Genitalia
• Female Sexual Response and Hormonal Control
• Mammary Glands

The excretory system, basically, is a search and removal system in your body. Your body does the same thing every day. Hidden throughout your body are dangerous poisons that must be removed in order for it to survive. The process of excretion involves finding and removing waster materials produced by the body.

The primary organs of excretion are the lungs, kidneys and skin. Waste gasses are carried by blood traveling through the veins to the lungs where respiration takes place. Dead cells and sweat are removed from the body through the skin which is part of the integument system.

Liquid waste is removed from the body through the kidneys. Located beside the spine in your back within your ribcage, the kidneys are small 9about 10 centimeters long) reddish-brown organs shaped like beans.

During circulation, blood passes through the kidneys in order to deposit used and unwanted water, minerals, and a nitrogen-rich molecule called urea. The kidneys filter the wastes from the blood, forming liquid called urine. The kidneys funnel the urine into the bladder along two separate tubes called ureters. The bladder stores the urine until muscular contractions force the urine out of the body through the urethra. Each day, your kidneys produce about 1.5 liters of urine. All of it needs to be removed from your system. This occurs through urination.


The body’s integument system supports the excretory system in the removal of waste. Skin, hair, fingernails and toenails make up the system by which surface wastes are removed.

The skin protects the body and also provides for the removal of dead cells and sweat, which contains many waste products. Hair, fingernails and toenails are actually accumulations of dead epidermal cells. As more cells die and need to be removed, the hair and nails grow.