Circulatory System Flashcards

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1
Q

What is the primary function of the circulatory system?

A

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

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2
Q

True or False: The heart has four chambers.

A

True

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3
Q

Fill in the blank: The two upper chambers of the heart are called __________.

A

atria

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4
Q

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

A

Pulmonary circulation and systemic circulation.

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5
Q

What type of blood vessel carries oxygenated blood away from the heart?

A

Arteries

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6
Q

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

A

C) Neurons

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7
Q

What is the role of red blood cells?

A

To transport oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.

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8
Q

True or False: Veins carry deoxygenated blood back to the heart.

A

True

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9
Q

Fill in the blank: The largest artery in the body is the __________.

A

aorta

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10
Q

What is the function of capillaries?

A

To allow the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

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11
Q

Multiple Choice: Which part of the heart is responsible for pumping blood to the lungs? A) Left atrium B) Right ventricle C) Left ventricle D) Right atrium

A

B) Right ventricle

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12
Q

What is the function of valves in the heart?

A

To prevent the backflow of blood and ensure it flows in one direction.

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13
Q

True or False: The pulmonary arteries carry oxygenated blood.

A

False

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14
Q

Fill in the blank: The liquid component of blood is called __________.

A

plasma

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15
Q

What is the role of platelets in the blood?

A

To help with blood clotting.

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16
Q

Multiple Choice: Which type of blood vessel has thin walls and valves? A) Arteries B) Veins C) Capillaries D) None of the above

A

B) Veins

17
Q

What is systemic circulation?

A

The circulation of blood from the heart to the rest of the body and back.

18
Q

True or False: The heart is located in the left side of the chest.

A

False

19
Q

Fill in the blank: The heart’s natural pacemaker is called the __________.

A

sinoatrial node

20
Q

What does blood pressure measure?

A

The force of blood against the walls of the arteries.

21
Q

Multiple Choice: What causes the heartbeat? A) Electrical signals B) Muscle contractions C) Both A and B D) None of the above

A

C) Both A and B

22
Q

What are the two phases of the cardiac cycle?

A

Systole and diastole.

23
Q

True or False: The coronary arteries supply blood to the heart muscle itself.

A

True

24
Q

Fill in the blank: The main function of the lymphatic system is to __________.

A

help maintain fluid balance and support the immune system.

25
Q

What is the role of the aorta in the circulatory system?

A

To carry oxygenated blood from the heart to the rest of the body.

26
Q

Multiple Choice: Which type of blood cell is primarily involved in immune response? A) Red blood cells B) White blood cells C) Platelets D) Plasma

A

B) White blood cells