Parasternal line

Diagram showing the parasternal line.

The parasternal line is an important anatomical landmark used in the field of medicine and anatomy. It is a vertical line that runs parallel to the sternum, or breastbone, and is used as a reference point in various medical examinations and procedures.

Anatomy

The parasternal line is located on the anterior aspect of the thorax. It is typically drawn from the midpoint of the clavicle down to the costal margin. This line is used to help locate structures within the thoracic cavity, such as the heart, lungs, and great vessels.

Clinical Significance

In clinical practice, the parasternal line is used as a guide for auscultation and percussion of the chest. It helps in identifying the position of the heart and assessing the cardiac silhouette. The line is also used in procedures such as thoracentesis and the placement of chest tubes.

Related Anatomical Landmarks

The parasternal line is one of several vertical lines used in thoracic anatomy. Other important lines include the midclavicular line, the anterior axillary line, and the midaxillary line. These lines help in dividing the thorax into regions for clinical assessment.

Related Pages

• Sternum
• Thorax
• Heart
• Lungs
• Auscultation