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.
The right bronchus now passes below the artery, and is known as the hyparterial branch which divides into the two lobar bronchi to the middle and lower lobes. The left main bronchus is smaller in caliber but longer than the right, being 5 cm long.It enters the root of the left lung opposite the sixth thoracic vertebra.he right main bronchus subdivides into three secondary bronchi (also known as lobar bronchi), which deliver oxygen to the three lobes of the right lungâthe superior, middle and inferior lobe.