How do organs work together? Ch. 2 L. 3 Notes (pg. 46 - 49)

Directions: Write one interesting fact or one question in a complete sentence for each slide.

Vocabulary Organ System – a group of organs and tissues that work together to carry out a life process.

Skeletal System Each bone is an organ There are 206 bones in your body Bones work together to perform many functions Protect vital organs such as your brain, heart, and lungs Provide your body with support Bone marrow is where blood cells are made Store calcium for when blood gets low

Muscle System Muscles are organs that work together to move your body There are about 640 muscles that you can control When you run, your brain tells many muscles how to work together Muscle cells work in bundles for strength There are many more muscles you don’t have to think about Your body will shiver on its own to try keeping you warm Heart beat

Organ Systems Working Together Muscle + skeletal systems work together to move your body Many muscles work in pairs Biceps are used to bend your arm, while triceps are used to straighten Muscles ALWAYS pull on bones and NEVER push

Other Systems Work Together Nervous system + muscle system + skeletal system move your body Brain sends signals, muscles move bones, bone support body Circulatory system + muscle system move blood through body Heart is part of both systems Respiratory system + circulatory system move oxygen through your body Lungs bring in oxygen, blood takes oxygen to body parts and removes carbon dioxide that lungs push out when you exhale Digestive system + muscle system move food through your body

Skeletal Muscle Circulatory Nervous Digestive