Hepatic caeca observed in cockroach is positioned in its body in / at -

Options

A. between the `2^(nd) and 3^(rd)` segments of the mesothorax.
B. oesophagus
C. junction of foregut and midgut
D. junction of midgut and ileum

Answer

To solve the question regarding the position of the hepatic ceca in a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure**:
- The hepatic ceca (also known as gastric ceca) are tubular structures associated with the digestive system of the cockroach. They play a crucial role in digestion by producing digestive enzymes.

2. **Identify the Digestive System Layout**:
- The digestive system of a cockroach consists of several parts: the mouth, pharynx, esophagus, foregut, midgut, and hindgut. The foregut includes the crop and gizzard, while the midgut is where most digestion and absorption occur.

3. **Locate the Hepatic Ceca**:
- The hepatic ceca are located between the foregut and midgut. They are positioned as extensions of the foregut and serve to assist in digestion before the food moves into the midgut.

4. **Evaluate the Options**:
- The options provided in the question are:
- A) Between the second and third segments of the mesothorax
- B) Esophagus
- C) Junction of foregut and midgut
- D) Junction of midgut and ileum
- Based on our understanding, the hepatic ceca are specifically found at the junction of the foregut and midgut.

5. **Select the Correct Answer**:
- Therefore, the correct answer is **C) Junction of foregut and midgut**.