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Biology 20: Resp System > Biology 20 Circulatory System > Flashcards

Biology 20 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 is a muscular organ that pumps blood through the circulatory system.

A

True

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3
Q

What are the two main circuits of the circulatory system?

A

The systemic circuit and the pulmonary circuit.

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4
Q

Fill in the blank: The _____ carries oxygenated blood away from the heart.

A

aorta

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5
Q

What is the role of red blood cells?

A

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

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6
Q

Multiple Choice: Which type of blood vessel carries blood back to the heart? A) Arteries B) Veins C) Capillaries

A

B) Veins

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7
Q

What is the function of the lymphatic system?

A

To transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.

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8
Q

True or False: The lymphatic system is part of the circulatory system.

A

True

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9
Q

What is lymph?

A

A clear fluid that circulates through the lymphatic system, containing white blood cells and waste products.

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10
Q

Fill in the blank: The _____ is the largest lymphatic organ in the body.

A

spleen

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11
Q

What is the function of the valves in veins?

A

To prevent the backflow of blood.

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12
Q

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

A

C) Lymph

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13
Q

What is the term for the contraction of the heart muscle?

A

Systole

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14
Q

True or False: Arteries have thicker walls than veins.

A

True

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15
Q

What is the primary gas exchanged in the lungs?

A

Oxygen

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16
Q

Fill in the blank: The _____ system helps regulate body temperature.

A

circulatory

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17
Q

What is the role of platelets in the blood?

A

To help with blood clotting.

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18
Q

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

A

B) Right atrium

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19
Q

What is the purpose of the pulmonary circuit?

A

To carry deoxygenated blood from the heart to the lungs for oxygenation.

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20
Q

True or False: The heart has four chambers.

A

True

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21
Q

What are the names of the heart’s four chambers?

A

Right atrium, right ventricle, left atrium, left ventricle.

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22
Q

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

A

sinoatrial

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23
Q

What is hypertension?

A

High blood pressure.

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24
Q

Multiple Choice: Which type of blood vessel has the thinnest walls? A) Arteries B) Veins C) Capillaries

A

C) Capillaries

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25
Q

What is the function of the capillaries?

A

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

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26
Q

True or False: The lymphatic system does not have a pump like the heart.

A

True

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27
Q

What is the main component of blood plasma?

A

Water

28
Q

Fill in the blank: The _____ system plays a crucial role in immunity.

A

lymphatic

29
Q

What type of cells do lymph nodes contain?

A

Lymphocytes

30
Q

Multiple Choice: Which vessel carries oxygen-rich blood from the lungs to the heart? A) Pulmonary artery B) Pulmonary vein C) Aorta

A

B) Pulmonary vein

31
Q

What is the role of the aorta?

A

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

32
Q

True or False: Veins have valves to assist blood flow against gravity.

A

True

33
Q

Fill in the blank: Blood pressure is measured in _____ over _____ (units).

A

millimeters of mercury (mmHg)

34
Q

What are the two main types of circulation in the body?

A

Systemic and pulmonary circulation.

35
Q

Multiple Choice: What is the primary function of white blood cells? A) Carry oxygen B) Fight infections C) Clot blood

A

B) Fight infections

36
Q

What is the term for the relaxation phase of the heart?

A

Diastole

37
Q

True or False: The heart can function without any nerve supply.

A

True

38
Q

What is the role of the coronary arteries?

A

To supply blood to the heart muscle itself.

39
Q

Fill in the blank: The _____ is a network of vessels that transport lymph throughout the body.

A

lymphatic system

40
Q

What is the primary purpose of the valves in the heart?

A

To ensure unidirectional blood flow through the heart.

41
Q

Multiple Choice: Which part of the heart pumps oxygenated blood to the body? A) Left atrium B) Right ventricle C) Left ventricle

A

C) Left ventricle

42
Q

What is the function of the thymus gland?

A

To produce and mature T-lymphocytes (a type of white blood cell).

43
Q

True or False: Blood type is determined by the presence of specific antigens on red blood cells.

A

True

44
Q

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

A

aorta

45
Q

What is the term for the process of blood cell formation?

A

Hematopoiesis

46
Q

Multiple Choice: Which blood component is responsible for clotting? A) Plasma B) Red blood cells C) Platelets

A

C) Platelets

47
Q

What is the role of the spleen in the lymphatic system?

A

To filter blood and help fight infections.

48
Q

True or False: The circulatory system is involved in the regulation of pH levels in the body.

A

True

49
Q

Fill in the blank: The _____ system helps absorb fats and fat-soluble vitamins from the digestive system.

A

lymphatic

50
Q

What is the primary function of the pulmonary arteries?

A

To carry deoxygenated blood from the heart to the lungs.

51
Q

Multiple Choice: Which of the following is a type of white blood cell? A) Erythrocyte B) Neutrophil C) Thrombocyte

A

B) Neutrophil

52
Q

What is the function of interstitial fluid?

A

To provide a medium for nutrient and waste exchange between blood and cells.

53
Q

True or False: The lymphatic system helps to maintain fluid balance in the body.

A

True

54
Q

Fill in the blank: The _____ is a small organ that filters lymph.

A

lymph node

55
Q

What is the role of the vena cava?

A

To return deoxygenated blood to the heart.

56
Q

Multiple Choice: Which type of circulation delivers oxygen to body tissues? A) Pulmonary B) Systemic C) Coronary

A

B) Systemic

57
Q

What is the primary role of the heart valves?

A

To prevent the backflow of blood.

58
Q

True or False: The lymphatic system is essential for the absorption of dietary fats.

A

True

59
Q

Fill in the blank: The _____ helps to regulate blood pressure.

A

kidneys

60
Q

What is the significance of the blood-brain barrier?

A

To protect the brain from harmful substances in the bloodstream.

61
Q

Multiple Choice: Which of the following is a function of the circulatory system? A) Hormone transport B) Nutrient transport C) Waste removal D) All of the above

A

D) All of the above

62
Q

What type of immunity involves the production of antibodies?

A

Humoral immunity

63
Q

True or False: The body can produce antibodies against foreign antigens.

A

True

64
Q

Fill in the blank: The _____ is a major site of immune response.

A

lymph node

65
Q

What is the role of the right ventricle?

A

To pump deoxygenated blood to the lungs.

66
Q

Multiple Choice: What is the main function of the heart? A) To filter blood B) To pump blood C) To produce hormones

A

B) To pump blood

67
Q

What is the primary function of the lymphatic vessels?

A

To transport lymph throughout the body.

Biology 20: Resp System (4 decks)

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