14 Flashcards

1
Q

What is the primary function of the circulatory system?
A) Transport nutrients and oxygen
B) Regulate body temperature
C) Facilitate digestion
D) Support immune function

A

Answer: A) Transport nutrients and oxygen

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2
Q

What is the largest artery in the body?
A) Pulmonary artery
B) Aorta
C) Femoral artery
D) Coronary artery

A

Answer: B) Aorta

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3
Q

Which part of the heart is responsible for pumping oxygenated blood to the body?
A) Right atrium
B) Left atrium
C) Right ventricle
D) Left ventricle

A

Answer: D) Left ventricle

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4
Q

What type of blood vessels carry blood away from the heart?
A) Veins
B) Capillaries
C) Arteries
D) Venules

A

Answer: C) Arteries

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5
Q

What is the role of red blood cells?
A) Fight infections
B) Clot blood
C) Transport oxygen
D) Regulate blood pressure

A

Answer: C) Transport oxygen

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6
Q

Which component of blood is primarily responsible for clotting?
A) Plasma
B) Red blood cells
C) White blood cells
D) Platelets

A

Answer: D) Platelets

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7
Q

What is the primary function of the right atrium?
A) Pump oxygenated blood to the lungs
B) Receive deoxygenated blood from the body
C) Regulate heart rate
D) Pump oxygenated blood to the body

A

Answer: B) Receive deoxygenated blood from the body

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8
Q

Which blood vessels are involved in nutrient and gas exchange?
A) Arteries
B) Veins
C) Capillaries
D) Lymphatics

A

Answer: C) Capillaries

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9
Q

What is the function of the valves in the heart?
A) Prevent backflow of blood
B) Increase blood pressure
C) Pump blood
D) Produce hormones

A

Answer: A) Prevent backflow of blood

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10
Q

What is the normal resting heart rate for adults?
A) 40-60 beats per minute
B) 60-100 beats per minute
C) 100-120 beats per minute
D) 120-140 beats per minute

A

Answer: B) 60-100 beats per minute

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11
Q

Which blood type is known as the universal donor?
A) A+
B) AB-
C) O-
D) B+

A

Answer: C) O-

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12
Q

What is the main purpose of the pulmonary circulation?
A) Deliver oxygen to body tissues
B) Remove carbon dioxide from the body
C) Pump blood to the digestive organs
D) Supply blood to the heart

A

Answer: B) Remove carbon dioxide from the body

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13
Q

What is the primary function of the aorta?
A) Receive deoxygenated blood
B) Pump blood to the lungs
C) Distribute oxygenated blood to the body
D) Filter blood

A

Answer: C) Distribute oxygenated blood to the body

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14
Q

What is the role of the coronary arteries?
A) Supply blood to the brain
B) Supply blood to the lungs
C) Supply blood to the heart muscle
D) Remove waste from the body

A

Answer: C) Supply blood to the heart muscle

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15
Q

Which type of blood vessel carries deoxygenated blood?
A) Pulmonary veins
B) Arteries
C) Aorta
D) Pulmonary arteries

A

Answer: D) Pulmonary arteries

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16
Q

What is the function of plasma in the blood?
A) Carry oxygen
B) Fight infections
C) Transport nutrients, hormones, and waste
D) Clot blood

A

Answer: C) Transport nutrients, hormones, and waste

17
Q

What part of the heart initiates the electrical impulses that control the heartbeat?
A) Atrioventricular (AV) node
B) Sinoatrial (SA) node
C) Bundle of His
D) Purkinje fibers

A

Answer: B) Sinoatrial (SA) node

18
Q

What is hypertension?
A) Low blood pressure
B) High blood pressure
C) Irregular heartbeats
D) Hardening of the arteries

A

Answer: B) High blood pressure

19
Q

Which blood component is primarily involved in immune response?
A) Red blood cells
B) Plasma
C) White blood cells
D) Platelets

A

Answer: C) White blood cells

20
Q

What is the main role of the left atrium?
A) Pump blood to the lungs
B) Receive oxygenated blood from the lungs
C) Pump deoxygenated blood to the body
D) Control heart rate

A

Answer: B) Receive oxygenated blood from the lungs

21
Q

What can result from blockages in the coronary arteries?
A) Stroke
B) Heart attack
C) Hypertension
D) Arrhythmia

A

Answer: B) Heart attack

22
Q

Which condition is characterized by the thickening and stiffening of arterial walls?
A) Atherosclerosis
B) Arrhythmia
C) Bradycardia
D) Anemia

A

Answer: A) Atherosclerosis

23
Q

What is the primary function of the valves in veins?
A) Prevent backflow of blood
B) Increase blood flow
C) Decrease blood pressure
D) Store blood

A

Answer: A) Prevent backflow of blood

24
Q

Which chamber of the heart has the thickest walls?
A) Right atrium
B) Left atrium
C) Right ventricle
D) Left ventricle

A

Answer: D) Left ventricle

25
Q

What is the role of the spleen in the circulatory system?
A) Pump blood
B) Filter blood and produce lymphocytes
C) Produce hormones
D) Store oxygen

A

Answer: B) Filter blood and produce lymphocytes

26
Q

What is the effect of adrenaline on the circulatory system?
A) Slows heart rate
B) Increases heart rate and blood flow
C) Decreases blood pressure
D) Enhances digestion

A

Answer: B) Increases heart rate and blood flow

27
Q

What is the function of the jugular veins?
A) Carry oxygenated blood from the heart
B) Carry deoxygenated blood from the brain to the heart
C) Supply blood to the lungs
D) Filter blood

A

Answer: B) Carry deoxygenated blood from the brain to the heart

28
Q

What is the average blood volume in an adult human?
A) 2-3 liters
B) 4-6 liters
C) 7-9 liters
D) 10-12 liters

A

Answer: B) 4-6 liters

29
Q

Which type of blood vessel is typically the smallest in diameter?
A) Arteries
B) Capillaries
C) Veins
D) Arterioles

A

Answer: B) Capillaries

30
Q

What role does the heart play in the circulatory system?
A) Filters blood
B) Produces red blood cells
C) Pumps blood throughout the body
D) Regulates hormones

A

Answer: C) Pumps blood throughout the body