Body System Lesson

Multicellular organisms are more complex than single-celled organisms. Which of the following identifies the organization of your body?

• Cells, tissue, organ systems, organs, organ system

• Cells, organ systems, tissue, organs, organism

• Cells, tissue, organs, organ systems, organism

• Cells, organ systems, organs, tissue, organism

Look at the lungs above. Which level of body organization do lungs represent?

• Organ system

• Cell

• Organ

• Tissue

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Because its structure is more complex,

• A tissue has a more complex function than an organ

• A cell has a more complex function than a tissue

• An organ has a more complex function than a tissue

• A cell has a more complex function than an organ

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Which organ functions as part of the digestive system?

• Heart

• Stomach

• Muscles

• Lungs

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Which organ system do blood cells and blood vessels belong to?

• Circulatory system

• Nervous system

• Respiratory system

• Skeletal system

Which organ system includes the bones?

• Skeletal system

• Muscular system

• Respiratory system

• Circulatory system

One role of rib bones in the _________________ system is to protect the heart from physical injury.

• Digestive

• Circulatory

• Skeletal

• Muscular

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The spinal cord is a thick column of _____________________________________________.

• blood vessels that helps to support and hold up the body.

• bony discs that protects nervous tissue.

• muscle tissue that connects nerve cells in the brain with nerve in the body.

• nervous tissue that connects the brain to the body’s nerves.

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The digestive system doesn’t work alone. After nutrients are absorbed in the small intestine, other body systems become involved in the process. Nutrient distribution depends on the _______________ system to transport nutrients to the cells around the body through the bloodstream.

• respiratory

• circulatory

• muscular

• digestive

Your heart is a powerful, fist-shaped muscles that beats 100,000 times a day to power the circulatory system. Which of the following are the functions of the circulatory system? Choose 2 functions that apply.

• Transporting nutrients

• Transporting oxygen

• Breaking down nutrients

• Removing wastes from the body

• Removing water and carbon dioxide from the body

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