LS.5.1.1 Levels of Organization and Body Systems

What is the main function of the respiratory system?

• To circulate blood throughout the body.

• To bring oxygen into the body and remove carbon dioxide.

• To digest food and absorb nutrients.

• To regulate body temperature.

What is a voluntary muscle?

• A muscle you can control, like your arm or leg muscles.

• A muscle that works automatically without conscious control.

• A muscle that is only found in the heart.

• A muscle that is always contracted.

What is the difference between voluntary and involuntary muscles?

• Voluntary muscles are controlled by the brain; involuntary muscles are not.

• Voluntary muscles move when you choose; involuntary muscles move automatically.

• Voluntary muscles are found only in the heart; involuntary muscles are found in limbs.

• Voluntary muscles are always stronger than involuntary muscles.

What do similar cells working together form?

• Organs

• Tissues

• Cells

• Systems

Tags

NGSS.MS-LS1-3

What is the smallest unit of life in the body?

• The cell.

• Tissue.

• Organ.

• Atom.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is an involuntary muscle?

• A muscle you can control at will, like your arm muscles.

• A muscle that works automatically, like your heart or stomach muscles.

• A muscle that is only found in the legs.

• A muscle that can be trained to respond to commands.

What is the correct order from smallest to largest: cell, organ, body system, tissue?

• Tissue → Cell → Organ → Body System

• Cell → Tissue → Organ → Body System

• Organ → Body System → Tissue → Cell

• Body System → Organ → Tissue → Cell

What do organs working together form?

• A body system (also called an organ system).

• A tissue layer.

• A cellular structure.

• A metabolic pathway.

Tags

NGSS.MS-LS1-3

What is the main function of the digestive system?

• To break down food so the body can absorb nutrients.

• To circulate blood throughout the body.

• To provide structural support to the body.

• To regulate body temperature.

What is the main function of the skeletal system?

• To support the body and protect internal organs.

• To produce hormones that regulate metabolism.

• To facilitate movement through muscle contraction.

• To store energy in the form of fat.