What is the function of the horizontal fissure?
In the right lung, the short horizontal fissure runs horizontally from the oblique fissure up to the anterior border and separates a wedge-shaped middle lobe from the upper lobe [1]. The fissures facilitate a uniform expansion of whole lung for more air intake during respiration.
What is horizontal fissure in lungs?
The horizontal fissure separates the right upper lobe from the right middle lobe. It may be seen on a normal chest X-ray as a thin line running roughly horizontally from the edge of the lung towards the right hilum.
At what level is the horizontal fissure?
The horizontal fissure lies at the level of the 6th rib laterally when seen on a PA radiograph. It extends medially to the hilum. The lobes are shown right upper lobe, RUL; right middle lobe, RML and right lower lobe, RLL.
What are the different types of lungs fissures?
azygos fissure.
What is the oblique fissure?
Medical Definition of oblique fissure : either of two fissures of the lungs of which the one on the left side of the body separates the superior lobe of the left lung from the inferior lobe and the one on the right separates the superior and middle lobes of the right lung from the inferior lobe.
At what rib is the horizontal fissure?
Gross anatomy The horizontal fissure arises from the right oblique fissure and follows the 4th intercostal space from the sternum until it meets the oblique fissure as it crosses right 5th rib 1.
How many fissures does the lung have?
The right lung has three lobes and two fissures while the left lung has two lobes and one fissure.
What is the major fissure?
The oblique fissures (also called the major fissures or greater fissures) are bilateral structures in both lungs separating the lung lobes.
What is the lateral fissure?
The lateral sulcus (Sylvian fissure) is a very deep fold seen on the lateral surface of the hemisphere running in an anterior to posterior direction and serves to separate the temporal lobe from the frontal and parietal lobes.
What is longitudinal fissure?
Medical Definition of longitudinal fissure : the deep groove that divides the cerebrum into right and left hemispheres.
What is the cardiac notch?
The cardiac notch is a concavity in the lung that formes to accommodate the heart. The inferior border is thin and separates the base of the lung from the costal surface. The posterior border is thick and extends from the C7 to the T10 vertebra, which is also from the apex of the lung to the inferior border.
What is the longitudinal fissure?
a deep groove that marks the division between the left and right cerebral hemispheres of the brain. At the bottom of the groove, the hemispheres are connected by the corpus callosum.
What is interhemispheric fissure?
The interhemispheric fissure, also known as the medial longitudinal fissure, is the deep groove within the midline separating both cerebral hemispheres and containing the falx cerebri. Being a fissure, it also contains CSF as well as some midline branches of the ACA and PCA.
Where is the lingula located?
Description. The left lung, unlike the right does not have a middle lobe. However the term lingula is used to denote a projection of the upper lobe of the left lung that serves as the homologue. This area of the left lobe – the lingula, means little tongue (in Latin) and is often referred to as the tongue in the lung.
What is the lingula part of the lung?
The term lingula refers to the tip or tongue-like projection of the upper lobe of the left lung but in general it is considered also to be the entire portion of this segment which is supplied by the first segmental bronchus that arises from the upper lobe bronchus.
What is cardiac Incisura?
The anterior interventricular sulcus and posterior interventricular sulcus extend from the base of the ventricular portion to a notch, the notch of cardiac apex, (or incisura apicis cordis) on the acute margin of the heart just to the right of the apex.