The membranes that suspend vertebrate organs in the body cavity are called :

Options

A. visceral muscle
B. coelomic membranes
C. ligaments
D. mesenteries

Explanation

To answer the question, "The membranes that suspend vertebrate organs in the body cavity are called:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the specific type of membranes that hold or suspend organs within the body cavity of vertebrates.

2. **Identify the Options**: The options provided are:
- A) Visceral muscle
- B) Coelomic membranes
- C) Ligaments
- D) Mesenteries

3. **Analyze Each Option**:
- **Visceral Muscle**: This refers to the muscle tissue that forms the walls of internal organs, not membranes that suspend organs.
- **Coelomic Membranes**: These are indeed the membranes that line the coelom (body cavity) and suspend the organs within it.
- **Ligaments**: These are fibrous connective tissues that connect bones to other bones, not related to suspending organs.
- **Mesenteries**: While mesenteries do connect intestines to the abdominal wall, they are a specific type of coelomic membrane.

4. **Select the Correct Answer**: Based on the analysis, the most appropriate answer that directly refers to the membranes suspending organs in the body cavity is **B) Coelomic membranes**.

### Final Answer:
The membranes that suspend vertebrate organs in the body cavity are called **coelomic membranes**.

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