Why is course of recurrent laryngeal nerve different on both sides?

The recurrent laryngeal nerves branch off the vagus, the left at the aortic arch, and the right at the right subclavian artery. The left RLN is longer than the right, because it crosses under the arch of the aorta at the ligamentum arteriosum.

What is the course of the recurrent laryngeal nerve?

vagus nerve
The recurrent laryngeal nerve (RLN) branches off the vagus nerve (cranial nerve X) and has an indirect course through the neck. It supplies innervation to all of the intrinsic muscles of the larynx, except for the cricothyroid muscles, as well as sensation to the larynx below the level of the vocal cords.

Is the recurrent laryngeal nerve ipsilateral?

The RLNs provide ipsilateral motor innervation to the intrinsic laryngeal muscles for vocalization—to all the intrinsic laryngeal muscles except for the cricothyroids.

Does left recurrent laryngeal nerve come off left or right vagus nerve?

The left recurrent laryngeal nerve comes from the left vagus nerve, loops posteriorly around the arch of the aorta, and ascends in the tracheoesophageal groove posterior to the left lobe of the thyroid, where it enters the larynx and innervates the musculature in a similar fashion as the right nerve.

Is the recurrent laryngeal nerve a branch of the vagus nerve?

The recurrent laryngeal nerve (RLN) is a branch of the vagus. The course of the right and left recurrent laryngeal nerves. The right RLN leaves the right vagus nerve as it crosses the right subclavian artery and loops posteriorly under the artery.

What does the left recurrent laryngeal nerve recur around?

The recurrent laryngeal nerves originate from the vagus nerves (Fig. 4.8). The right nerve recurs posteriorly around the right subclavian artery, while the left nerve recurs around the aortic arch.

What happens when both recurrent laryngeal nerve is damaged?

Damage to the laryngeal nerve can result in loss of voice or obstruction to breathing. Laryngeal nerve damage can be caused by injury, tumors, surgery, or infection. Damage to the nerves of the larynx can cause hoarseness, difficulty in swallowing or breathing, or the loss of voice.

What type of nerve is the recurrent laryngeal nerve?

the vagus nerve
The recurrent laryngeal nerve (RLN), also known as the inferior laryngeal nerve, is a branch of the vagus nerve (CN X) which has a characteristic loop around the right subclavian artery on the right and the aortic arch on the left before returning up to achieve the tracheoesophageal groove and then the larynx.

Is recurrent laryngeal nerve sensory or motor?

Superiorly, sensory and motor innervation are separated by internal and external branches of the superior laryngeal nerves. Inferiorly, the sensory and motor innervation is provided by the recurrent laryngeal nerve.

Is the laryngeal nerve a part of the vagus nerve?

The vagus nerve has branches within the neck; these branches are the pharyngeal branches, superior laryngeal nerves, recurrent laryngeal nerves, and superior cardiac nerves.

What nerve is the recurrent laryngeal nerve?

The recurrent laryngeal nerve (RLN), also known as the inferior laryngeal nerve, is a branch of the vagus nerve (CN X) which has a characteristic loop around the right subclavian artery on the right and the aortic arch on the left before returning up to achieve the tracheoesophageal groove and then the larynx.