Muscular ridges present inside each ventricle are

Options

A. 1)Trabeculae carneae
B. 2)Chordae tendineae
C. 3)Papillary muscles
D. 4)Pectinate muscles

Answer

To answer the question regarding the muscular ridges present inside each ventricle, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the name of the muscular ridges found inside the ventricles of the heart.

2. **Reviewing the Options**: The options provided are:
- A) Trabeculae carneae
- B) Chordae tendineae
- C) Papillary muscles
- D) Pectinate muscles

3. **Analyzing Each Option**:
- **Option A: Trabeculae carneae**: These are muscular ridges found in both the right and left ventricles. They are irregularly shaped muscular columns that help in the contraction of the ventricles. This option is correct.
- **Option B: Chordae tendineae**: Known as heart strings, these are fibrous cords that connect the papillary muscles to the tricuspid and mitral valves. They are not muscular ridges, so this option is incorrect.
- **Option C: Papillary muscles**: These are muscles that support the heart valves but are not classified as muscular ridges. They help in preventing the inversion of the valves during contraction. Hence, this option is incorrect.
- **Option D: Pectinate muscles**: These are muscular structures found in the atria (the upper chambers of the heart) and are not present in the ventricles. Therefore, this option is also incorrect.

4. **Conclusion**: After analyzing all the options, the correct answer is **Option A: Trabeculae carneae**. These are indeed the muscular ridges present inside each ventricle.

### Final Answer:
**Trabeculae carneae**