LET'S RECALL
Make a table comparing the three types of muscles according to appearance, type of
movement, location/examples, etc.
a.
C
c. heart
LET'S CHECKI -
A: Read each question. Choose the letter of the best answer. Write your answers in your
notebook.
1. Which of the following is a skeletal muscle?
a. muscle of the diaphragm
c. muscle of the stomach
b. muscle of the lungs
d
muscle of the thigh
2. How does a muscle pull a bone?
The muscle expands.
The muscle twists.
b. The muscle contracts
d. The muscle flattens aut.
3. Which of these organs has voluntary muscles?
a. arms
b. esophagus
d. stomach
4. What happens to the muscles when they are not often used?
They become toned.
c. They become weak.
b. They become strong.
d. They become big.
5. Which type of muscle is involved in the beating of the heart?
a. cardiac muscles
c. skeletal muscles
b. smooth muscles
d. all muscles
6. Which activity is made possible by smooth muscles?
a. blinking
C. running
b. digesting
d. writing
B: Identify the kind of muscle that is involved in the given activity. Choose the correct letter.
A- Skeletal
B - Smooth
C-Cardiac
1. digestion of food
4. breathing
2. blinking of the eye
5. beating of the heart
3. writing
LET'S APPLY ITI -
Answer the following questions:
1. What is the difference between skeletal and smooth muscles?
2. Why can't you control the action of the smooth and cardiac muscles?
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Answer:
Let's Check
1.d
2.b
3.a
4.c.they become weak
5.a
6.d
B
1.b
2.c
3.b
4.c
5.a
Explanation:
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