#1
Which blood vessels carry oxygenated blood away from the heart?
Veins
Arteries
Capillaries
Venules
#2
What is the primary function of the circulatory system?
Digestion
Respiration
Transportation of nutrients and oxygen
Muscle movement
#3
Which of the following is a symptom of internal bleeding?
Bruising
Pale skin
Rapid pulse
All of the above
#4
What is the role of the sinoatrial (SA) node in the heart?
Conducting electrical impulses to the atrioventricular (AV) node
Initiating the heartbeat by generating electrical signals
Pumping oxygenated blood to the body
Regulating blood pressure
#5
What is the purpose of the pericardium in the heart?
Producing red blood cells
Providing structural support
Regulating blood pressure
Preventing friction and protecting the heart
#6
What is the main function of platelets in the blood?
Transport oxygen
Clotting
Immune response
Blood pressure regulation
#7
Which of the following is NOT a symptom of shock?
Pale or cool skin
Rapid and shallow breathing
Elevated blood pressure
Confusion or unconsciousness
#8
In which chamber of the heart does oxygenated blood first enter?
Right atrium
Left atrium
Right ventricle
Left ventricle
#9
What is the term for the condition where there is a lack of red blood cells or hemoglobin?
Leukopenia
Anemia
Thrombocytosis
Hemophilia
#10
What is the function of the lymphatic system in relation to the circulatory system?
Transporting oxygen
Filtering and draining excess fluids
Producing red blood cells
Regulating blood pressure
#11
What is the medical term for a heart attack?
Arrhythmia
Myocardial infarction
Aneurysm
Angina pectoris
#12
How is blood pressure typically measured?
Pulse oximetry
Body temperature
Sphygmomanometer
Stethoscope
#13
Which blood type is considered the universal donor?
#14
What is the term for the process of blood clot formation?
Hemolysis
Thrombolysis
Hemostasis
Coagulation
#15
What is the medical term for low blood pressure?
Hypertension
Hypotension
Orthostatic hypotension
Ischemia