CirculatorySystem2021

Multiple Choice

Which letter on the diagram is the left atrium?

• A

• B

• C

• D

Multiple Choice

Which letter is pointing to the tricuspid valve?

• M

• N

• L

• O

Multiple Choice

What is the correct order of blood flow through the heart?

• Superior vena cava → Right atrium → Tricuspid valve → Right ventricle → Pulmonary trunk → Pulmonary arteries → Lungs → Pulmonary veins → Left atrium → Bicuspid valve → Left ventricle → Aorta

• Right atrium → Tricuspid valve → Right ventricle → Pulmonary trunk → Pulmonary veins → Left atrium → Bicuspid valve → Aorta

• Aorta → Left ventricle → Bicuspid valve → Left atrium → Pulmonary veins → Lungs → Pulmonary trunk → Right ventricle → Tricuspid valve → Right atrium → Superior vena cava

• Pulmonary arteries → Lungs → Pulmonary veins → Left atrium → Bicuspid valve → Left ventricle → Aorta

Multiple Choice

What is the shape of the heart as described in the image?

• Blunt rounded point of cone

• Flat part at opposite end of cone

• Closed fist

• Triangular shape

Multiple Choice

Which chamber of the heart has the thickest wall and why?

• Right atrium, because it pumps blood to the systemic circulation

• Left atrium, because it receives oxygenated blood from the lungs

• Right ventricle, because it pumps blood to the pulmonary circulation

• Left ventricle, because it pumps blood to the systemic circulation

Multiple Choice

Identify the circled valve

• Tricuspid
• Mitral
• Pulmonary
• Aortic

Multiple Choice

What are the two main phases of the cardiac cycle?

• Systole and Diastole

• Inhale and Exhale

• Relaxation and Contraction

• Filling and Emptying

Multiple Choice

What is the function of the Sinoatrial (SA) node in the conducting system of the heart?

• To initiate the heartbeat

• To regulate blood pressure

• To pump blood to the lungs

• To receive oxygenated blood

Multiple Choice

In the diagram below, which part of the tracing represents the contraction of the atria?

• P

• T

• R

• S

Multiple Choice

What is pulmonary circulation?

• Blood travelling to and from the lungs
• Blood travelling to and from the body
• A blood clot in the lungs
• The vessel that brings blood to the lungs

Open Ended

Which blood vessels have the thinnest walls and why?

Multiple Choice

What is the primary function of erythrocytes (red blood cells)?

• To carry nutrients

• To carry hemoglobin and oxygen

• To repair tissues

• To fight infections

Multiple Choice

Which statement correctly describes the activities of the components of human blood shown in the diagram?

• Both A and B function in immune responses, and C transports oxygen

• A, B, and C are able to synthesize hemoglobin

• Both B and C provide immunity, and A transports nutrients

• A transports oxygen, B starts clots, and C functions in immune response to fight infections

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident