The isthmus which connects right and left lobes of thyroid gland is located from ____ tracheal cartilages

Options

A. 1st to 3rd
B. 2nd to 4th
C. 5th to 7th
D. 6th to 8th.

Answer

To determine the location of the isthmus that connects the right and left lobes of the thyroid gland, we can follow these steps:

1. **Understand the Anatomy of the Thyroid Gland**: The thyroid gland is shaped like a butterfly and consists of two lobes (right and left) that are connected by a bridge of tissue known as the isthmus.

2. **Identify the Location of the Isthmus**: The isthmus of the thyroid gland spans across the windpipe (trachea). It is important to know which tracheal cartilages the isthmus is located between.

3. **Know the Tracheal Cartilages**: The trachea is made up of several cartilaginous rings. The relevant cartilages for the thyroid gland's isthmus are the second to fourth tracheal cartilages.

4. **Select the Correct Option**: Based on the anatomical knowledge, the isthmus of the thyroid gland is located from the second to the fourth tracheal cartilages.

Thus, the answer to the question is that the isthmus which connects the right and left lobes of the thyroid gland is located from the **second to the fourth tracheal cartilages**.