Organ Systems and Homeostasis The Human Body!

4 Types of Tissue Connective: Connects all parts of body Epithelial: Surfaces of body inside and out Muscle: Makes parts of the body move Nervous: Controls messages between brain & parts of body

Organ Systems There are 11 in the human body First 3: Group of organs that work together to perform a major function There are 11 in the human body First 3: 1. Integumentary: skin, hair and nails Function: provides a barrier and protection 2. Skeletal: bones, cartilage, ligaments, tendons Function: Provides support and protection, minerals, blood cells 3. Muscular: muscles Function: Pulls on the skeleton to provide movement

What are these 3 organ systems?

The next 6 organ systems 4. Circulatory: tube like vessels throughout body Function: carries food and oxygen to all the cells 5. Respiratory lungs, nose, pharynx, larynx, trachea, bronchi, bronchioles, lungs Function: takes in oxygen and disposes of carbon dioxide 6. Digestive System mouth, pharynx, esophagus, stomach, small and large intestines, rectum, liver, pancreas Function: breaks down food into small molecules the body can use

7. Excretory System: kidney, ureter, urinary bladder, urethra Function: removes waste from the breakdown of materials in the bloodstream 8. Immune System: specialized white blood cells Function: destroys disease-causing bacteria and viruses 9. Reproductive: testes, epididymis, vas deferens, urethra, and penis; Females-Ovaries, Fallopian tubes, uterus Function: contains organs that produce sex cells and produce chemicals that regulate physical development of maturing bodies.

Last 2 are Nervous and Endocrine These two provide control over body processes.

10. Nervous: Brain, spinal cord, peripheral nerves, (senses: sight, hearing, touch, smell, taste) Functions: Recognizes and coordinates the body’s responses to changes in its internal and external environments 11. Endocrine: Glands- Hypothalamus, pituitary, pineal, thyroid, parathyroid, adrenals pancreas, ovaries (females), testes (males) Function: Controls growth, development, and metabolism, maintains homeostasis

Homeostasis All of the body systems work together to maintain homeostasis! The process by which an organism’s internal environment is kept stable in spite of changes in the external environment. What are examples? Why is this important?