DOC

Surface anatomy of heart, valves and great vessels

By Audrey Snyder,2014-04-29 23:37
11 views 0
Surface anatomy of heart, valves and great vessels

Surface anatomy of heart, valves and great

    vessels

    Important landmarks for surface anatomy

Arbitary lines

     Thorax is mapped out by arbitary lines which are as follows:

     Midsternal,

     The middle line of the sternum Mammary, or Midclavicular

     Runs vertically downward from a point midway between the center of the jugular notch and the tip of the acromion

     Lateral sternal

     Along the sternal margin Parasternal

     Midway between the lateral sternal and mammary.

     Anterior and Posterior

    axillary lines

     Vertically down from the corresponding axillary folds

     Midaxillary line

     Runs downward from the apex of the axilla.

     Scapular line

     Drawn vertically through the inferior angle of the scapula.

Boundary of the Heart

    Parasternally nd 2 left rib rd 3 right rib th 6 right rib th 5 intercostal space (midclavicular line)

     Join these points together to get the boundary of heart

Coronary sulcus

     Line from the 3rd left, to the 6th right, sternocostal joint.

    Anterior longitudinal sulcus

     Finger’s breadth to the right of the left margin of the heart.

Cardiac valves

     Pulmonary valve rd Upper level of 3 left costal cartilage

Aortic valve rd At the level of 3 costal cartilage,

    medial and below the pulmonary valve

     Mitral valve (left AV valve) th 4 costal cartilage

     Tricuspid valve (right AV valve) th 4 costal cartilage on the right side

    Great vessels of the body Ascending Aorta

    1) Beginning at the level of the lower rdborder of the left 3 costal cartilage.

     nd2) Upto the right 2 costal cartilage. At

    the sternal angle

    Arch of the Aorta

     Behind the lower half of the

    manubrium sterni.

     Its upper convex border is marked by a line

     Begins at the right end of the sternal angle

     Arches upward and to the left through the centre of the manubrium nd Ends at the sternal end of the left 2 costal cartilage.

    Descending Thoracic Aorta

     Descending thoracic aorta is marked by two parallel lines 2.5 cm

    apart nd Begins at the sternal end of the left 2 costal cartilage

     Pass downwards and medially

     Ends in the median plane 2.5 cm above the transpyloric plane.

Pulmonary trunk

    ; First mark the pulmonary valve by a horizontal line 2.5 cm long, mainly along rdthe upper border of the left 3 costal cartilage and adjoining part of the

    sternum.

    ; Then mark the pulmonary trunk by two parallel lines 2.5 cm apart from the ndpulmonary orifice upwards to the left 2 costal cartilage.

    1. Superior vena cava

     2. Inferior vena cava

     3. Right atrium (blue)

     4. Right ventricle

     5. Left ventricle (red)

     6. Aorta

     7. Pulmonary trunk Superior vena cava

    st Lower border of the right 1 costal cartilage to the upper border of

    rdthe 3 right costal cartilage.

    Inferior vena cava

     Inferior vena cava is situated

    opposite the upper margin of

    the sixth right costal cartilage

    about 2 cm. from the midsternal

    line

Report this document

For any questions or suggestions please email
cust-service@docsford.com