Direction: Write the letter of the correct answer.
1. Which of these organs has involuntary muscles? a. Arm b. Stomach c. Finger
d. Tongue
2. When does a muscle pull a bone?
a. When it relaxes b. When it expands c. When it contracts d. When it bends
1. Which of these organs has involuntary muscles? a. Arm b. Stomach c. Finger
d. Tongue
2. When does a muscle pull a bone?
a. When it relaxes b. When it expands c. When it contracts d. When it bends
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Answer:
1.b.stomach
2.a.when it relax
Answer:
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