The cardiovascular system consists of the heart and the ________. ...

[nummyann]

The cardiovascular system consists of the heart and the ________.
 
  A) lungs and heart
  B) brain, blood vessels, and nervous system
  C) vascular structures
  D) skin

Question 2

The job of the red blood cells is to deliver oxygen to the tissues of the body.
 
  The red blood cells can fail in their task due to a variety of problems, such as: not enough red cells, not enough hemoglobin inside the red cells, or the hemoglobin inside the red cells is defective. The term that is used for all these conditions is: A) atrophy
  B) anemia
  C) neutropenia
  D) iron deficiency

[mohan]

Answer to Question 1

C
Explanation: A) The lungs are part of the respiratory system.
B) These are not part of the cardiovascular system.
C) Correct The combining form vascul/o- means blood vessel.
D) The skin is part of the integumentary system.

Answer to Question 2

B