Circulatory System Trivia Quiz - Free Biology Quiz with Answers

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Are you an expert when it comes to our Circulatory System? Do you want to test your knowledge? Take the ultimate Circulatory System trivia quiz! Our online quiz contains a variety of Circulatory System questions and answers, ranging from basic facts to complex functions. Challenge yourself and see if you can score high on this fun Circulatory System quiz! With topics like pulmonary arteries, valve anatomy, and organs and hormones, you’ll be sure to gain a deeper understanding of the Circulatory System. So, what are you waiting for? Prove your expertise and give it a try!

Question 1:

What is the primary function of the circulatory system?

A) Digestion

B) Respiration

C) Transportation of nutrients and waste

D) Protection from infection

1 b

Question 2:

Which component of blood carries oxygen to the body's cells?

A) Platelets

B) Red blood cells

C) White blood cells

D) Plasma

1 b

Question 3:

Which blood vessels carry blood away from the heart?

A) Arteries

B) Veins

C) Capillaries

D) Venules

1 b

Question 4:

What is the main function of the capillaries in the circulatory system?

A) Carry oxygen-rich blood

B) Regulate blood pressure

C) Exchange of nutrients, oxygen, and waste between blood and tissues

D) Return blood to the heart

1 b

Question 5:

What are the smallest blood vessels in the human body?

A) Arteries

B) Veins

C) Capillaries

D) Venules

1 b

Question 6:

The circulatory system can be divided into which two main subsystems?

A) Cardiovascular and lymphatic

B) Pulmonary and systemic

C) Arterial and venous

D) Upper and lower

1 b

Question 7:

Which chamber of the heart receives oxygen-poor blood from the body and sends it to the lungs?

A) Left atrium

B) Left ventricle

C) Right atrium

D) Right ventricle

1 b

Question 8:

Which blood vessels carry blood back to the heart?

A) Arteries

B) Veins

C) Capillaries

D) Venules

1 b

Question 9:

What is the term for the smooth muscle layer that surrounds blood vessels?

A) Tunica intima

B) Tunica media

C) Tunica externa

D) Endothelium

1 b

Question 10:

In which blood vessels does the exchange of gases, nutrients, and waste products occur?

A) Arteries

B) Veins

C) Capillaries

D) Venules

1 b

Question 11:

What is the largest artery in the human body?

A) Aorta

B) Pulmonary artery

C) Carotid artery

D) Femoral artery

1 b

Question 12:

Which part of the circulatory system helps regulate blood pressure and blood flow?

A) Arterioles

B) Capillaries

C) Venules

D) Venae cavae

1 b

Question 13:

What is the main purpose of the pulmonary circulation?

A) To deliver oxygen to the tissues

B) To remove waste from the body

C) To transport nutrients

D) To bring oxygen-poor blood to the lungs for oxygenation

1 b

Question 14:

The force exerted by blood on the walls of blood vessels is called?

A) Blood flow

B) Blood viscosity

C) Blood pressure

D) Blood volume

1 b

Question 15:

Which valve in the heart prevents blood from flowing back into the left atrium from the left ventricle?

A) Tricuspid valve

B) Mitral (Bicuspid) valve

C) Pulmonary valve

D) Aortic valve

1 b