#1
Which chamber of the heart receives oxygenated blood from the lungs?
Right atrium
Left atrium
Right ventricle
Left ventricle
#2
Which blood vessel carries oxygenated blood away from the heart to the body?
Vein
Artery
Capillary
Vena cava
#3
Which blood vessel carries deoxygenated blood from the body back to the heart?
Vein
Artery
Capillary
Vena cava
#4
What is the average adult human heart rate at rest?
60-70 beats per minute
80-90 beats per minute
100-110 beats per minute
120-130 beats per minute
#5
What is the name of the largest artery in the human body?
Aorta
Pulmonary artery
Coronary artery
Carotid artery
#6
What is the primary function of red blood cells?
To fight infections
To transport oxygen
To regulate blood pressure
To produce antibodies
#7
Which hormone regulates the production of red blood cells?
Insulin
Estrogen
Erythropoietin
Testosterone
#8
What is the name of the valve between the left atrium and the left ventricle?
Tricuspid valve
Mitral valve
Aortic valve
Pulmonary valve
#9
What is the term for the relaxation phase of the heart cycle?
Systole
Diastole
Cardiac output
Stroke volume
#10
What is the purpose of the circulatory system?
To transport oxygen and nutrients to cells
To regulate body temperature
To remove waste products from cells
All of the above
#11
What is the role of platelets in the circulatory system?
To transport oxygen
To fight infections
To form blood clots
To regulate blood pressure
#12
Which of the following is NOT a function of the circulatory system?
Transporting nutrients
Regulating body temperature
Producing hormones
Removing waste products
#13
What is the term for the process of blood cell formation?
Erythropoiesis
Hematopoiesis
Thrombopoiesis
Leukopoiesis
#14
Which of the following is a disorder of the circulatory system?
Asthma
Diabetes
Hypertension
Osteoporosis
#15
What is the term for the network of blood vessels in the body?
Circulatory system
Nervous system
Endocrine system
Lymphatic system