Atlas of Human Anatomy by Netter

brachiocephalic vein to form the superior vena cava
Body of the sternum: Anterior to the T5 through T9 vertebrae and the right border of the heart
Nipple: Anterior to the 4th intercostal space in males and the dome of the right hemidiaphragm; sits on the pectoralis major muscle
Xiphoid process: At the level of the T10 vertebra
The costal margins: Comprises the 7th through 10th costal cartilages
On yourself, palpate the following:
The sternoclavicular joints, lateral to the jugular notch
The sternum and its parts: manubrium, body, and xiphoid process
The manubriosternal joint (sternal angle)
The second pair of ribs on either side of the sternal angle-the surface landmark for rib counting
Surface lines can be drawn to identify regions of the thorax
Imaginary perpendicular lines passing through the midpoint of each clavicle are called the midclavicular lines.
Midaxillary lines are perpendicular lines through the apex of the axilla on both sides
Cephalic vein can be seen in some subjects lying in the deltopectoral groove between the deltoid and pectoralis major muscles.