Given the name of blood vessel, which arises from first chamber of heart in cockroach :

Options

A. Nephrocyte
B. Fenestrae
C. Ostia
D. Anterior aorta

Answer

To answer the question regarding the name of the blood vessel that arises from the first chamber of the heart in a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Cockroach Heart**:
- The heart of a cockroach is a long, tubular structure that is divided into 13 chambers. Each chamber plays a role in the circulation of blood throughout the body.

2. **Identify the First Chamber of the Heart**:
- The first chamber of the cockroach heart is responsible for receiving blood from the dorsal sinus and pumping it out through the appropriate blood vessel.

3. **Determine the Blood Vessel Arising from the First Chamber**:
- The blood vessel that arises from the first chamber of the cockroach heart is known as the **anterior aorta**. This vessel carries blood away from the heart to the rest of the body.

4. **Eliminate Other Options**:
- The other options provided (nephrocyte, fenestrae, ostium) do not refer to blood vessels arising from the heart.
- Nephrocyte is involved in excretion.
- Fenestrae are perforations in the head.
- Ostium refers to the openings through which blood enters the heart chambers.

5. **Conclude the Answer**:
- Therefore, the correct answer to the question is **anterior aorta**.

### Final Answer:
The blood vessel that arises from the first chamber of the heart in a cockroach is the **anterior aorta**.

---