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Set 5 4 The Heart As A Pump

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Question 1

(Multiple Choice)

Free
Blood is ejected into the systemic circulation during

A) Atrial diastole
B) Atrial systole
C) Ventricular diastole
D) Ventricular systole
E) The QRS complex

Answer

Question 2

(Multiple Choice)

Free
The SA node

A) Directly excites ventricular muscle
B) Conducts electrical signals from autonomic nerves
C) Lies in the wall of the left atria
D) Relays electrical signals from autonomic nerves
E) Is the cardiac pacemaker

Answer

Question 3

(Multiple Choice)

Free
Contraction of the left ventricle

A) Occurs at the sam e time as contraction of the right ventricle
B) Occurs immediately after the aortic valve opens
C) Occurs immediately after the pulmonary valve opens
D) Ejects blood through the tricuspid valve into the aorta
E) Ejects blood through the m itral valve into the aorta

Answer