Circulatory System

What gives blood its red color?

• Hemoglobin

• All the protein it contains

• Oxygen

• Nutrients

Tags

NGSS.MS-LS3-1

Which of the following do we now know is the correct order of blood flow in the heart from oxygen poor (deoxygenated) to oxygen rich (oxygenated)?

• R atrium, R ventricle, L atrium, L ventricle

• L atrium, L ventricle, R atrium, R ventricle

• R ventricle, R atrium, L ventricle, L atrium

• L ventricle, L atrium, R ventricle, R atrium

Pulmonary veins carry blood towards...

• the lungs

• the R atrium

• the L atrium

• the L ventricle

• the R ventricle

Which part of the heart pumps blood into the lungs through the pulmonary track?

• R atrium

• L atrium

• R ventricle

• L ventricle

Coronary arteries branch off of which of the following?

• coronary veins

• pulmonary veins

• pulmonary arteries

• aorta

Which chamber of the heart is the largest and strongest?

• R atrium

• L atrium

• R ventricle

• L ventricle

The pulmonary valve regulates blood flow from ____ to ____

• pulmonary arteries to R ventricle

• R ventricle to pulmonary arteries

• pulmonary arteries to L ventricle

• L ventricle to pulmonary arteries

Where does electrical signal start in the heart?

• SA Node

• NA Node

• HP Node

• VA Node

What connects the arterioles and venules?

• Aorta

• Interventricular septum

• Capillaries

• None of the above

The mitral (tricuspid) valve connects which of the following?

• R atrium and R ventricle

• L atrium and L ventricle

• R atrium and L atrium

• L ventricle and R ventricle