Explanation:
A closed fracture is the type of fracture that the bone completely break but does not pierce through the skin
Smoking
Bad cholesterol and really low hdl or good
High blood pressure or uncontrolled hypertension
Obesity
Uncontrolled stress or anger
:)
Answer:With this system, blood always flows in only one direction inside the heart. There are also valves at the bottom of the large arteries that carry blood away from the heart: the aorta and the pulmonary artery. These valves keep the blood from flowing backward into the heart once it has been pumped out.
Explanation:
The correct answer is B :)
