James was diagnosed with atherosclerosis, which is :

James was diagnosed with atherosclerosis, which is
 
  A) a condition in which oxygen levels in the blood are reduced.
  B) a buildup of plaque in the lining of an artery.
  C) an inadequate number of red blood cells.
  D) severe chest pain caused by restricted blood flow.

---

Musculoskeletal conditions include back pain, arthritis, injuries, and osteoporosis.
 
  Indicate whether the statement is true or false

---

Jorge had surgery to implant a mechanical pacemaker that regulates his heartbeat. What cluster of cells in a healthy heart performs this function?
 
  A) Tricuspid valve
  B) Sinoatrial node
  C) Vena cava
  D) Right atrium

---

Explain at least four important steps a pregnant woman can take to ensure a successful pregnancy.
 
  What will be an ideal response?

---

There are about a dozen types of arthritis.
 
  Indicate whether the statement is true or false