How Do Organs Work Together Chapter 2 3

Organ Systems • Organ System: A group of organs and tissues working together to

Muscle System • Long thin bundles work together. • When you move your mouth

Bones and Muscles Work Together • Many muscles work in pairs to move bones.

Nerves and Muscles • Nervous system controls how muscles move bones • Nerves carry

Other systems work together • Muscles in heart push blood through system. • Muscles

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How Do Organs Work Together? Chapter 2. 3

Organ Systems • Organ System: A group of organs and tissues working together to carry out life processes. • Bones form a system • about 200 bones in the body • Provide body with support, protects, makes red blood cells in bone marrow • http: //www. geocities. com/hotsprings/falls/5568/images/bones. jpg

Muscle System • Long thin bundles work together. • When you move your mouth or arm, many muscles work together.

Bones and Muscles Work Together • Many muscles work in pairs to move bones. • Biceps and Triceps demo • Muscles can only pull • As a muscle is pulled it contracts and the other muscle relaxes • . http: //www. sciencelearn. org. nz/var/sciencelearn/storage/images/contexts/see_through_body/sci_media/images/bicep_and_tricep_muscles/25105 -4 -eng- NZ/bicep_and_tricep_muscles 1_full_size_landscape. jpg

Nerves and Muscles • Nervous system controls how muscles move bones • Nerves carry signal from brain to spinal cord to muscles.

Other systems work together • Muscles in heart push blood through system. • Muscles squeeze food through digestive system • Red and white blood cells made in bone marrow. • Bone marrow: soft material that fills cavities and spongy bone material inside some bones.

Cell and Organ movie

Homework • Pg. 47 #1 -2 • pg. 49 # 1 -3