HBS

_________ are responsible for returning blood back to the heart

• Axons

• Veins

• Arteries

• Valves

What creates the "lub dub" heart sounds?

• Flow of blood

• Closing of valves

• Opening of valves

• Breathing

Tags

NGSS.HS-LS1-3

Which part of the heart pumps deoxygenated (oxygen-poor) blood?

• Left side

• Right side

• Top side

• Bottom side

The structure labeled #4 is

• septum

• apex

• left ventricle

• papillary muscle

Which type of vessels have the smallest diameter?

• arteries

• venules

• capillaries

• arterioles

Which of the following would decrease blood pressure?

• increased viscosity

• increased vessel radius

• increased blood volume

• increased cardiac output

Tags

NGSS.HS-LS1-3

An electrocardiogram measures what?

• The amount of pressure exerted on blood vessels.

• The electrical activity of the heart.

• How many times the heart contracts over time.

• The body's temperature caused by friction of blood in vessel.

The p-wave correlates with which event?

• atrium contraction /signals moving from SA node to AV node

• ventricle contraction

• ventricle repolarization

• both atrial and ventricle contraction

The AV node is located at...

• A

• B

• C

• D

What is the primary function of hemoglobin in the blood?

• Transporting oxygen

• Fighting infections

• Clotting blood

• Regulating blood pressure