Which of the following is incorrect

Options

A. Heart muscles are striated and involuntary
B. The muscles of hand and legs are striated and voluntary.
C. The muscles located in the innerwalls of alimentary Canal are striated and involuntary.
D. Muscles located in the reproductive tracts are unstriated and involuntary

Answer

To determine which statement is incorrect, we will analyze each option provided in the question step by step.

### Step 1: Analyze the First Statement
**Statement:** Heart muscles are striated and involuntary.
**Analysis:** This statement is correct. Heart muscles, also known as cardiac muscles, are indeed striated (having a banded appearance) and involuntary (not under conscious control).

### Step 2: Analyze the Second Statement
**Statement:** The muscles of hands and legs are striated and voluntary.
**Analysis:** This statement is also correct. The muscles in the hands and legs are skeletal muscles, which are striated and under voluntary control.

### Step 3: Analyze the Third Statement
**Statement:** The muscles located in the inner walls of the alimentary canal are striated and involuntary.
**Analysis:** This statement is incorrect. The muscles in the inner walls of the alimentary canal are smooth muscles, which are non-striated and involuntary. Therefore, this statement is the one that is incorrect.

### Step 4: Analyze the Fourth Statement
**Statement:** The muscles located in the reproductive tract are unstriated and involuntary.
**Analysis:** This statement is correct. The muscles in the reproductive tract are also smooth muscles, which are indeed unstriated and involuntary.

### Conclusion
The incorrect statement among the options is the third one: "The muscles located in the inner walls of the alimentary canal are striated and involuntary."

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