Body Systems

Skeletal System Functions. Provides Protection for the Central Nervous System Such as Brain and Spinal Cord and Vital Organs such as the Heart and Lungs. Produces Red Blood Cells to Carry Oxygen and White Blood Cells to Protect Against Infection. It Provides a Framework for Muscles to Attach, Then when the Muscles Retract they pull on the Bones of the Skeleton which Act like Levers to Create Movement. Facts. The Skeletal System Consists of 206 Bones. The Skeletal System has a Network of Tendons, Ligaments and Cartilage that Connect the Bones.
Skin Functions. The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. The deeper subcutaneous tissue (hypodermics) is made of fat and connective tissue. Facts The average person's skin covers an area of 2 square meters. Skin accounts for about 15% of your body weight.
Muscular system Functions. Movement is done by the muscles contracting. Posture is created by the muscles when the stay contracted for long periods of time. Muscles also protect the organs with certain muscles called smooth muscles. Facts The smallest muscle is in your ear. Your tongue is the strongest muscle. Muscles cannot push only pull.
Digestive system - Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body. Waste products of digestion pass through the large intestine and out of the body as a solid matter called stool.Digestive System Facts 1.7 liters of saliva is produced each day. The esophagus is 25 cm long which is 9’’. An adult's stomach can hold approximately 1.5 liters of material. Digestive System Functions. It starts by ingestion and chewing then goes down the esophagus to the stomach. Then the food is broken down by molecules that the liver, gallbladder produce and is then goes threw the small intestine continuing to be broken down. What is not broken down in then goes to the large intestine and released through the anus.
Respiratory System Functions. Lungs (the primary organs are lungs) which carry out gases as we breathe. It’s a series of organs responsible for taking in oxygen and forcing out carbon dioxide. Red blood cells collect the oxygen from the lungs and carry it to the parts of the body where it is most needed, during this process, the red blood cells collect the carbon dioxide and and transports it back to the lungs, where it leaves the body as we exhale. Facts. We lose a lot of water when we breath, when at rest you lose up to 0.59 fluid ounces of water. When a person is at rest we usually breathe between 12 and 15 times a minute. Changing your sleeping position every 30 minutes is natural due to the body’s need to keep air flow balanced through both of your nostrils.

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