The left border of the heart is formed by the
A) left atrium and right atrium.
B) right atrium and right ventricle.
C) left atrium and left ventricle.
D) right ventricle and left ventricle.
E) None of the answers is correct.
Answer: C
You might also like to view...
Smooth muscle tissue actions are voluntary.
Answer the following statement true (T) or false (F)
Red blood cell production increases when
A) oxygen levels in the blood increase. B) oxygen levels in the blood decrease. C) protein levels in the blood increase. D) carbon dioxide levels in the blood decrease. E) carbon dioxide levels in the blood increase.
Solution 1 has a higher concentration of NaCl than solution 2 . A membrane permeable only to Na+ and water separates the two membranes. Which of the following is true?
a. Na+ will diffuse into solution 2 until the two solutions become isotonic. b. Solution 2 has a higher osmolarity. c. A membrane potential will develop, with the negative side being in solution 1. d. Solution 2 will gain water from solution 1. e. Eventually, solution 2 will contain only Na+ and solution 1 will contain only Cl-
Describe the four phases of the hair growth cycle
What will be an ideal response?