Introduction to the Cardiovascular System: Interactive Learning Quizzes

Question 1

Which of the following is NOT a primary function of the cardiovascular system?

Accepted Answer

Secretion of hormones

Answer

Transport of oxygen and nutrients to tissues

Answer

Regulation of blood pressure

Answer

Removal of waste products

Question 2

Which blood vessel carries oxygenated blood away from the heart?

Accepted Answer

Aorta

Answer

Pulmonary artery

Answer

Pulmonary vein

Answer

Vena cava

Question 3

What structure generates the electrical impulse that initiates the heartbeat?

Accepted Answer

Sinoatrial node

Answer

Atrioventricular node

Answer

Bundle of His

Answer

Purkinje fibers

Question 4

Which of the following is not a function of the cardiovascular system?

Accepted Answer

Fighting infection

Answer

Transporting oxygen and nutrients

Answer

Regulating blood pressure

Answer

Removing waste products

Question 5

What is the term for the resistance to blood flow through the blood vessels?

Accepted Answer

Peripheral resistance

Answer

Cardiac output

Answer

Blood pressure

Answer

Heart rate

Question 6

Which type of blood vessel contains the thickest layer of smooth muscle?

Accepted Answer

Arteries

Answer

Veins

Answer

Capillaries

Answer

Lymphatics

Question 7

Which hormone is primarily responsible for regulating blood pressure?

Accepted Answer

Renin

Answer

Adrenaline

Answer

Antidiuretic hormone

Answer

Insulin

Question 8

What is the term for the graphical representation of the heart's electrical activity?

Accepted Answer

Electrocardiogram

Answer

Electroencephalogram

Answer

Electromyogram

Answer

Electroretinogram

Question 9

What is the term for the fluid-filled sac that surrounds the heart?

Accepted Answer

Pericardial fluid

Answer

Pleural fluid

Answer

Synovial fluid

Answer

Cerebrospinal fluid

Question 10

Which component is NOT part of the cardiac conduction system?

Accepted Answer

Papillary muscles

Answer

Sinoatrial node

Answer

Atrioventricular node

Answer

Bundle of His

Question 11

Which ion is responsible for the initial depolarization phase of the cardiac action potential?

Accepted Answer

Sodium

Answer

Potassium

Answer

Calcium

Answer

Chloride

Question 12

What is the refractory period of a cardiac muscle cell?

Accepted Answer

The period after an action potential when the cell cannot generate another action potential

Answer

The period during which an action potential is generated

Answer

The period before an action potential when the cell is most likely to generate an action potential

Answer

The period when the cell is most responsive to neurotransmitters

Question 13

Which of the following factors **increases** heart rate?

Accepted Answer

Sympathetic stimulation

Answer

Vagal stimulation

Answer

Hyperkalaemia

Answer

Hypothermia

Question 14

Which of the following is **not** a type of blood vessel?

Accepted Answer

Lymph vessel

Answer

Artery

Answer

Vein

Answer

Capillary

Question 15

Which factor is the primary determinant of peripheral vascular resistance?

Accepted Answer

Blood vessel diameter

Answer

Blood viscosity

Answer

Vessel length

Answer

Cardiac output

Question 16

Which principle is NOT a key factor in determining blood pressure?

Accepted Answer

Blood viscosity does not affect blood flow.

Answer

Blood flow is directly proportional to the pressure gradient.

Answer

Resistance to blood flow is inversely proportional to the vessel's radius.

Question 17

Choose the option that accurately describes the effects of sympathetic and parasympathetic stimulation on heart rate and blood pressure:

Accepted Answer

Sympathetic: increases heart rate and blood pressure; parasympathetic: decreases heart rate and blood pressure

Answer

Sympathetic: increases heart rate and decreases blood pressure; parasympathetic: decreases heart rate and increases blood pressure

Answer

Sympathetic: decreases heart rate and blood pressure; parasympathetic: increases heart rate and blood pressure

Question 18

Which of the following is NOT a primary function of the cardiovascular system?

Accepted Answer

Thermoregulation

Answer

Transport of oxygen

Answer

Removal of waste products

Question 19

What is the term for the coordinated contraction and relaxation of the heart?

Accepted Answer

Cardiac cycle

Answer

Electrocardiogram

Answer

Myocardial infarction

Answer

Cardiac arrest

Question 20

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

Accepted Answer

Arteries

Answer

Capillaries

Answer

Veins

Answer

Lymphatics

Question 21

What is the name of the electrical impulse that triggers cardiac contraction?

Accepted Answer

Action potential

Answer

Sinoatrial node

Answer

Conduction system

Answer

Depolarization wave

Question 22

Which hormone is a key regulator of blood pressure?

Accepted Answer

Angiotensin II

Answer

Epinephrine

Answer

Insulin

Answer

Thyroid hormone

Question 23

What term describes the resistance encountered by blood flow within blood vessels?

Accepted Answer

Vascular resistance

Answer

Hematocrit

Answer

Blood pressure

Answer

Cardiac output

Question 24

Which of the following is a modifiable risk factor for developing cardiovascular disease?

Accepted Answer

Dyslipidemia

Answer

Gender

Answer

Genetics

Answer

Age

Question 25

What is the name of the muscular wall that separates the left and right ventricles?

Accepted Answer

Ventricular septum

Answer

Papillary muscle

Answer

Chordae tendineae

Answer

Atrioventricular valve

Question 26

Which type of blood cell is primarily responsible for oxygen transport?

Accepted Answer

Red blood cell

Answer

Platelet

Answer

White blood cell

Answer

Lymphocyte

Question 27

What is the medical term for abnormally high blood pressure?

Accepted Answer

Hypertension

Answer

Tachycardia

Answer

Hypotension

Answer

Bradycardia