Circulatory System

Question 1

What is the primary function of the circulatory system?

Answer 1

To transport oxygen, nutrients, hormones, and waste products throughout the body.

Question 2

True or False: The heart is a muscle that pumps blood through the circulatory system.

Answer 2

True

Question 3

Fill in the blank: The main artery that carries blood away from the heart is called the _____.

Answer 3

aorta

Question 4

What are the two main types of circulation in the circulatory system?

Answer 4

Systemic circulation and pulmonary circulation.

Question 5

Multiple choice: Which of the following is NOT a component of blood? A) Plasma B) Red blood cells C) Neurons D) White blood cells

Answer 5

C) Neurons

Question 6

What is the role of red blood cells?

Answer 6

To carry oxygen from the lungs to the body’s tissues and carbon dioxide from the tissues back to the lungs.

Question 7

True or False: Veins carry blood away from the heart.

Answer 7

False

Question 8

Fill in the blank: The heart has _____ chambers.

Answer 8

four

Question 9

What is the name of the valve that prevents backflow of blood from the aorta into the left ventricle?

Answer 9

Aortic valve

Question 10

Multiple choice: Which part of the heart receives deoxygenated blood? A) Left atrium B) Right atrium C) Left ventricle D) Right ventricle

Answer 10

B) Right atrium

Question 11

What is the average heart rate for a resting adult?

Answer 11

60 to 100 beats per minute.

Question 12

True or False: Capillaries are the smallest blood vessels in the body.

Answer 12

True

Question 13

Fill in the blank: The circulatory system is also known as the _____ system.

Answer 13

cardiovascular

Question 14

What is the function of the pulmonary circulation?

Answer 14

To carry deoxygenated blood from the heart to the lungs and return oxygenated blood back to the heart.

Question 15

Multiple choice: Which type of blood vessel carries oxygenated blood? A) Veins B) Arteries C) Capillaries D) All of the above

Answer 15

B) Arteries

Question 16

What is the role of platelets in the circulatory system?

Answer 16

To help with blood clotting.

Question 17

True or False: Blood pressure is a measure of the force of blood against the walls of blood vessels.

Answer 17

True

Question 18

Fill in the blank: The _____ node is known as the heart’s natural pacemaker.

Answer 18

sinoatrial (SA)

Question 19

What is the significance of the coronary arteries?

Answer 19

They supply blood to the heart muscle itself.

Question 20

Multiple choice: The average adult has approximately how many liters of blood? A) 2-4 liters B) 4-6 liters C) 6-8 liters D) 8-10 liters

Answer 20

B) 4-6 liters