Grade 3 Unit 3 Lesson 5

Which key idea do the details on pages 20 and 21 support about the role of muscles in the human body?

• Muscles are only involved primarily in digestion and circulation.

• Muscle numbers vary greatly from one person to another.

• Muscles help us with various activities such as running, sitting and even breathing.

• Muscles are not essential for everyday activities.

Tags

NGSS.MS-LS1-3

Read the paragraph below. Which detail best supports the key idea that involuntary muscles are not controlled by the person? Highlight the correct answer.

• The muscles in your heart, however, are involuntary muscles.

• Your thick, powerful heart is made of cardiac muscle, the strongest muscle in your body.

• They keep your heart beating, whether you are awake or asleep.

• Your brain controls how fast your heart beats without you even thinking about it.

Which key idea about voluntary muscles do the details in the chapter support?

• Voluntary muscles work automatically without your control.

• Voluntary muscles are one that you can move by your own will.

• Voluntary muscles are only found in the heart and stomach.

• Voluntary muscles are responsible for involuntary bodily functions.

Which key idea about skeletal muscles do the details in the paragraph support? Support your answer with evidence from the text.

• The skeletal muscles collaborate with the bones to facilitate movement.

• The skeletal muscles are responsible for the body's involuntary functions.

• The skeletal muscles are not involved in providing mobility.

• The skeletal muscles are only found in the arms and legs.

Which sentence from the paragraph supports the answer to Part A?

• There are three types of muscles in your body, but most of them are skeletal muscles.

• Your skeletal muscles work closely with your bones to give them mobility, or motion.

• Just as there are axial bones and appendicular bones, there are axial muscles and appendicular muscles.

• And where are the appendicular muscles located? Yes! In your arms and legs.

What is the key idea of Chapter 3? Include at least one detail to support the key idea.

• Muscles are only involved primarily in digestion and circulation.

• Muscle numbers vary greatly from one person to another.

• Muscles help us with various activities such as running, sitting and even breathing.

• Muscles are not essential for everyday activities.