18 & 19 Flashcards
The pacemaker of the heart is located in which of the following?
Right atrium
Which of the following arteries does not contribute to the circle of Willis?
Basilar artery
How many pulmonary veins enter the left atrium?
Four
The abdominal aorta runs to which of the following levels of the spinal vertebrae?
L4
Damage to which of the following is called a heart block?
A-V node
Pulmonary veins carry blood to which of the following?
Heart
Fenestrated capillaries are found in which of the following?
Pancreas
The left ventricular wall of the heart is thicker than the right wall so that it can do which of the following?
Pump blood with greater pressure
After blood leaves the capillaries it enters which of the following?
Venules
In normal conditions preload controls which of the following?
Stroke volume
The left ventricle received blood from the
Left atrium
Fluid collection in the pericardial cavity that restricts the beating of the heart is called:
cardiac tamponade.
Which of the following cavities is the second branch of the aortic arch?
Left common carotid artery
Sympathetic blocking drugs such as beta-blockers will do which of the following?
Decrease heart rate
Which of the following does not effect blood flow through the body?
Blood pH
Which of the following are deep veins of the lower leg?
Anterior and posterior tibial and peroneal.
During ventricular systole which of the following receives blood?
Both the aorta and the pulmonary trunk
Compression of the common carotid artery at the sinus can cause which of the following?
Unconsciousness
Arterial pressure is equal to which of the following?
Blood pressure
Blood remaining in the ventricle when it’s semi-lunar valance closes is called:
end-systolic volume.
