System /Function End of Human Body Systems Unit Study Guide Parts of the System Respiratory System – Responsible for taking in oxygen and expelling carbon dioxide. Sinuses Trachea Bronchi Lungs Alveoli Diaphragm Circulatory System – A system of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells. Heart Arteries Veins Blood Nervous System – A collection of nerves and specialized cells known as neuron that transmit signals between different parts of the body. *the bodies electrical wiring* Central Nervous System (brain, spinal cord, and nerves) Peripheral Nervous System (sensory neurons that connect to the central nervous system) Immune System – Transports and filters lymph. Initiates the immune response. Digestive System – A series of organs that converts food into nutrients that are absorbed into the body. Solid waste is also collected and removed. Urinary System – Produces, stores and eliminates wastes from the blood. Muscular System – Support Movement Maintain Posture Circulate Blood Skeletal System – Support and structure Movement Protection Passive Immunity – is temporary and can come from a mother to a child. Active Immunity – your own body is producing antibodies. The antigen – antibody reaction occurs within the body in response to contact with the antigen or by receiving a vaccination. Mouth Esophagus Stomach Small Intestines Liver Large Intestines Kidneys Nephrons Ureters Bladder Urethra Sphincter Muscles Types of Muscles Skeletal Smooth Cardiac *There are 650 muscles in the system. Bones – 206 bones in an adult Tendons Ligaments Cartilage *Bone Marrow produces blood cells. End of Human Body Systems Unit Study Guide Writing Prompt: What is homeostasis and how do the Human Body Systems work together to keep your body in homeostasis? My Example: What is homeostasis? Homeostasis is a balanced internal environment in vertebrates. Some examples of homeostasis in the human body are the ability to maintain a constant temperature, to maintain proper oxygenation levels, and to maintain proper nutrient levels. Many systems within the human body work together to keep the body in homeostasis. The circulatory system works in conjunction with the respiratory system, nervous system, digestive system, and the urinary system. The circulatory system carries nutrients, oxygen, and wastes through the body in a closed loop. The brain sends a signal to the body that oxygen and nutrients are needed in the cells. The signal travels through the nervous system to the lungs which are part of the respiratory system. The system reacts and draws in a breath. The circulatory system collects the oxygen to be released throughout the body. While the blood travels through the tissues and vessels it collects nutrients from the digestive system. The blood is also collecting wastes and bi-products that will be filtered and excreted by the urinary system. Finally the blood returns to the lungs where carbon dioxide, a waste product, is released when we exhale.