#1
Which of the following is a function of the respiratory system?
Transporting oxygen throughout the body
ExplanationRespiratory system facilitates the transport of oxygen to various body parts.
#2
What is the main function of the cardiovascular system?
Transporting nutrients and oxygen to cells
ExplanationCardiovascular system ensures the delivery of nutrients and oxygen to cells.
#3
Which of the following is NOT a component of the cardiovascular system?
Kidneys
ExplanationKidneys are not part of the cardiovascular system.
#4
Which of the following is a technique used to assess cardiovascular function by measuring blood pressure in different positions?
Orthostatic vital signs
ExplanationOrthostatic vital signs assess cardiovascular function by measuring blood pressure in various positions.
#5
What is the term for the force exerted by circulating blood against the walls of blood vessels?
Blood pressure
ExplanationThe force exerted by blood against vessel walls is termed blood pressure.
#6
Which of the following is a disorder characterized by an irregular heart rhythm?
Arrhythmia
ExplanationArrhythmia is a disorder marked by an irregular heart rhythm.
#7
Which of the following is NOT a component of the respiratory system?
Esophagus
ExplanationEsophagus is not a part of the respiratory system.
#8
What is the medical term for difficulty breathing?
Dyspnea
ExplanationDifficulty breathing is medically known as dyspnea.
#9
Which of the following is NOT a symptom of a heart attack?
Persistent cough
ExplanationPersistent cough is not a typical symptom of a heart attack.
#10
What is the role of the diaphragm in respiration?
It contracts to facilitate inhalation
ExplanationThe diaphragm contracts to aid in the process of inhalation during respiration.
#11
What is the role of hemoglobin in the respiratory system?
Transporting oxygen in the blood
ExplanationHemoglobin facilitates the transport of oxygen in the blood.
#12
Which blood vessel carries oxygenated blood away from the heart?
Aorta
ExplanationThe aorta carries oxygenated blood away from the heart.
#13
Which of the following is a major risk factor for cardiovascular diseases?
High cholesterol levels
ExplanationHigh cholesterol levels pose a significant risk for cardiovascular diseases.
#14
Which of the following is a common sign of respiratory distress in adults?
Cyanosis
ExplanationCyanosis, a bluish discoloration, is a common sign of respiratory distress in adults.
#15
What is the function of the atrioventricular node (AV node) in the heart?
Conducting electrical signals between atria and ventricles
ExplanationAV node conducts electrical signals between the heart's atria and ventricles.
#16
What is the function of the sinoatrial node (SA node) in the heart?
Initiating the heartbeat
ExplanationSA node initiates the heartbeat by generating electrical impulses.
#17
Which condition is characterized by the inflammation of the airways and difficulty breathing?
Asthma
ExplanationAsthma involves airway inflammation and difficulty breathing.
#18
What is the primary function of the alveoli in the respiratory system?
To exchange oxygen and carbon dioxide
ExplanationAlveoli facilitate the exchange of oxygen and carbon dioxide in the respiratory system.