Question

Transverse tubular system is a structure of:

• A. Nervous system
• B. Muscular system
• C. Digestive system
• D. Reproductive system

Hint:

T-tubules are found in both vertebrate and invertebrate striated muscles, linking electrical excitation to mechanical contraction (excitation-contraction coupling).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
In insect physiology, rapid coordination of muscular contraction requires efficient conduction of action potentials deep into muscle fibers.

Step 2: Detailed Explanation:
The transverse tubular system (or T-system) consists of membranous invaginations of the sarcolemma (muscle cell membrane) that penetrate deep into the interior of the muscle fiber.
This network allows action potentials to propagate rapidly from the surface of the muscle cell to the sarcoplasmic reticulum, triggering the release of calcium ions and initiating synchronous muscle contraction.
Therefore, it is a specialized structure of the muscular system.

Step 3: Final Answer:
The transverse tubular system is a structure of the muscular system, which corresponds to option (B).