Final answer:
The preferred points of central venous access are the right internal jugular vein and the left subclavian vein.
Step-by-step explanation:
The preferred points of central venous access are the right internal jugular vein and the left subclavian vein. These locations are commonly used for placing a central venous catheter due to their accessibility and lower risk of complications. The right internal jugular vein provides direct access to the superior vena cava, while the left subclavian vein offers more stability and reduced risk of pneumothorax.