(Questions 1-4 refer to figure, below, which shows the relationship between the

Question

(Questions 1-4 refer to figure, below, which shows the relationship between the blood volume within the left ventricle and time for a heartbeat

for a healthy control.)

1. Which statement accurately represents the relationship among muscle isometric tension and
the capacity of cardiac muscle to pump blood?
a) Isometric contraction occurs during interval ?F?; blood leaves the left ventricle
b) Isometric contraction occurs during interval ?F?; no blood enters or leaves the left ventricle
c) Isometric contraction occurs during interval ?G?; blood leaves the left ventricle
d) Isometric contraction occurs during interval ?G?; no blood enters or leaves the left ventricle
2. Which statement accurately represents the relationship among muscle isotonic tension and the
capacity of cardiac muscle to pump blood?
a) Isotonic contraction occurs during interval ?F?; blood leaves the left ventricle
b) Isotonic contraction occurs during interval ?F?; no blood enters or leaves the left ventricle
c) Isotonic contraction occurs during interval ?G?; blood leaves the left ventricle
d) Isotonic contraction occurs during interval ?G?; no blood enters or leaves the left ventricle
3. Which region is associated with ?systole??
a) region A
b) region F only
c) region G only
d) region B
4. What volume of blood is present in the left ventricle at the end of systole?
a) 40 ml
b) 120 ml
c) 80 ml
d) 0 ml

Explanation / Answer

1.a 2.b 3.c 4.a

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