Answer to Question 1
C
Explanation:
A) An electrocardiograph measures the electrical activity in the heart.
B) A cardiologist is a medical specialist of the heart.
C) Correct.
D) A defibrillator restores a normal heartbeat.
Answer to Question 2
C
Explanation:
A) A system is a group of organs that function together for a common purpose.
B) An organ is a group of different tissues that function together.
C) Correct.
D) An organelle is a body within a cell.