What is the function of the Atrioventricular (AV) Node?

Cardiovascular System Overview

Quiz
•
Biology
•
9th - 12th Grade
•
Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Conducts impulses to ventricles.
Regulates heart rate by controlling the speed of impulses.
Pumps blood to the lungs for oxygenation.
Transmits electrical signals to the atria.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the normal heart rate range?
50–80 bpm (beats per minute)
60–100 bpm (beats per minute)
70–110 bpm (beats per minute)
80–120 bpm (beats per minute)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are blood pressure cuffs called?
Sphygmomanometers
Stethoscopes
Thermometers
Oximeters
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is vasodilation?
Contraction of blood vessels.
Expanding of blood vessels.
Narrowing of airways.
Thickening of blood walls.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the aorta?
The largest artery.
A type of vein.
A muscle in the heart.
A blood cell type.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name three factors aiding venous return.
Skeletal muscle contractions, Diaphragm movement (breathing), Valves in veins
Increased blood pressure, High salt intake, Sedentary lifestyle
Dehydration, High cholesterol, Smoking
Excessive exercise, Low protein diet, Cold temperatures
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an aneurysm?
Weakening in a blood vessel wall, risk of rupture.
Inflammation of a blood vessel.
Blockage in a blood vessel leading to tissue death.
Abnormal growth of tissue in the heart.
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