Muscle relaxants are medications that are used to help relax the muscles and can be used to help reduce pain that comes from strains, sprains, cramp and muscular injuries. They can also help to combat general stress and can be used to aid sleep (and even to prevent sleepwalking).
The left lung has an indentation, called the cardiac depression, for the normal placement of the heart. Behind this is the hilum, through which the blood vessels, lymphatics, and bronchi enter and leave the lung.Air travels from the nasal passages to the pharynx, larynx, and trachea.hat part of the lung that is not covered by pleura and through which blood vessels, bronchi, nerves and lymphatics enter and leave the lung. lung lobe torsion. occurs uncommonly in dogs and cats, most often of the right middle lobe. May occur spontaneously, following trauma, or in association with pleural effusion.
A bronchus is one of the large tubes that lead from the human trachea to the lungs. There is one large bronchus in each lung that branches out into smaller bronchi within the lungs. Bronchi carry air into and out of the lungs.The respiratory system begins at the nose and mouth, which meet at the pharynx.he right main bronchus is larger than the left. It divides into three lobar bronchi. The left main bronchus splits off into two lobar bronchi. The lobar bronchi then branch into what are called tertiary bronchi, and then into smaller bronchioles.