Which of the following blood vessels receives blood directly from the left ventricle?
a. superior vena cava
b. pulmonary trunk
c. pulmonary veins
d. aorta
e. coronary sinus

The correct option is: D. Aorta

Explanation:

Aorta is the largest main artery of the human body, which originates at the left ventricle of the heart and extends to the abdomen and splits into the smaller common iliac arteries. Aorta receives oxygenated blood from left ventricle of the heart via aortic valve and distributes to all the parts of the body.                          

answer: all of the above

a. apply ice to the affected area.

b. administer tylenol (acetaminophen).

c. put a gate across the stairs.

d. apply knee and elbow protectors.