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The muscles of the face are...

The muscles of the face are

A

Striated muscle

B

Non-striated muscle

C

Cardiac

D

Both (1) & (2)

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Types of Muscles:** - The question asks about the muscles of the face and provides options: striated muscles, non-striated muscles, cardiac muscles, or both A and B. 2. **Understand the Characteristics of Facial Muscles:** - Facial muscles are primarily responsible for facial expressions. These muscles are categorized as striated skeletal muscles. 3. **Recognize the Role of the Facial Nerve:** - The facial muscles are innervated by the facial nerve, which is cranial nerve number 7. This nerve plays a crucial role in controlling the movements of these muscles. 4. **Define Striated Muscles:** - Striated muscles have a banded appearance (striation) due to the arrangement of sarcomeres, which are the basic units of muscle contraction. This structure allows for voluntary control over facial expressions. 5. **Differentiate Between Muscle Types:** - Non-striated muscles (smooth muscles) do not have striations and are involuntary, found in the walls of internal organs (e.g., stomach, intestines). - Cardiac muscles are specialized striated muscles found only in the heart. 6. **Conclude the Correct Answer:** - Since facial muscles are striated and are responsible for expressions, the correct answer is **A. Striated muscles**. 7. **Additional Information:** - Facial muscles are also referred to as "mimetic muscles" because they help in mimicking expressions. They originate from the skull bones and are located just beneath the skin (subcutaneous).
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