Page 191 - 86 human physiology part-2

Chapter 20

• D) There is no free calcium
E) All of the above

The cardiovascular system

1. This conducts electricity like nerves

A) Epicardium
B) Pericardium
• C) Myocardium
D) Subvalaular Apparatus
E) None of these, only nerves conduct electricity

2. This carries the most blood at any given time in the body

• A) Veins
B) Capillary Beds
C) Veins
D) Aorta
E) Vena Cava

3. The following contract together to pump blood

A) Right atrium with the right ventricle and left atrium with the left ventricle
• B) Right atrium with left atrium and right ventricles with left ventricle
C) Tricuspid valve and mitral valve
D) Aorta and pulmonary artery
E) Aorta, pulmonary artery and pulmonary vein

4. This is the pacemaker of the heart

A) AV node
B) Purkinje fibers
C) AV Bundle
• D) SA node
E) None of these, a pacemaker is surgically inserted

5. When reading an EKG, this letter shows the depolarization from the AV node down to the AV
bundle

A) S
B) P
C) U
D) T
• E) Q

6. The T wave in an EKG shows

406 | Human Physiology