What portion of the total blood volume is contained in the venous system?

A patient has asked for advice on how to apply eye drops that have been prescribed. What is the first instruction the patient should follow?

A) Remove contact lenses. B) Wash hands thoroughly with soap and water. C) Wipe any excess medication from the eyelids and lashes by using a tissue. D) Uncap the container, tilt the head back slightly, and look at the ceiling.

What are the recommendations for adult physical activity as defined in the 2008 Physical Activity Guidelines?

What will be an ideal response?