18 & 19

Question 1

The pacemaker of the heart is located in which of the following?

Answer 1

Right atrium

Question 2

Which of the following arteries does not contribute to the circle of Willis?

Answer 2

Basilar artery

Question 3

How many pulmonary veins enter the left atrium?

Answer 3

Four

Question 4

The abdominal aorta runs to which of the following levels of the spinal vertebrae?

Answer 4

L4

Question 5

Damage to which of the following is called a heart block?

Answer 5

A-V node

Question 6

Pulmonary veins carry blood to which of the following?

Answer 6

Heart

Question 7

Fenestrated capillaries are found in which of the following?

Answer 7

Pancreas

Question 8

The left ventricular wall of the heart is thicker than the right wall so that it can do which of the following?

Answer 8

Pump blood with greater pressure

Question 9

After blood leaves the capillaries it enters which of the following?

Answer 9

Venules

Question 10

In normal conditions preload controls which of the following?

Answer 10

Stroke volume

Question 11

The left ventricle received blood from the

Answer 11

Left atrium

Question 12

Fluid collection in the pericardial cavity that restricts the beating of the heart is called:

Answer 12

cardiac tamponade.

Question 13

Which of the following cavities is the second branch of the aortic arch?

Answer 13

Left common carotid artery

Question 14

Sympathetic blocking drugs such as beta-blockers will do which of the following?

Answer 14

Decrease heart rate

Question 15

Which of the following does not effect blood flow through the body?

Answer 15

Blood pH

Question 16

Which of the following are deep veins of the lower leg?

Answer 16

Anterior and posterior tibial and peroneal.

Question 17

During ventricular systole which of the following receives blood?

Answer 17

Both the aorta and the pulmonary trunk

Question 18

Compression of the common carotid artery at the sinus can cause which of the following?

Answer 18

Unconsciousness

Question 19

Arterial pressure is equal to which of the following?

Answer 19

Blood pressure

Question 20

Blood remaining in the ventricle when it’s semi-lunar valance closes is called:

Answer 20

end-systolic volume.