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Science in Medicine and Healthcare Online MCQs with Answers
Which of the following is the smallest unit of life?
a) Cell
b) Tissue
c) Organ
d) Organism
What is the main function of red blood cells in the body?
a) Transporting oxygen
b) Fighting infection
c) Producing hormones
d) Digesting food
What is the term for a disease that can be transmitted from one person to another?
a) Infectious
b) Chronic
c) Genetic
d) Autoimmune
Which of the following is an example of a viral infection?
a) Influenza
b) Diabetes
c) Hypertension
d) Asthma
What is the role of antibodies in the immune system?
a) Identifying pathogens
b) Regulating body temperature
c) Controlling blood sugar levels
d) Facilitating nerve transmission
What is the function of the cerebrum in the brain?
a) Controlling voluntary movements
b) Regulating body temperature
c) Maintaining heart rate
d) Balancing the body
Which of the following is responsible for carrying nerve impulses away from the cell body?
a) Axon
b) Dendrite
c) Synapse
d) Nucleus
What is the function of insulin in the body?
a) Regulating blood sugar levels
b) Breaking down fats
c) Producing red blood cells
d) Digesting proteins
Which of the following is a major risk factor for cardiovascular diseases?
a) Obesity
b) Osteoporosis
c) Asthma
d) Migraine
What is the primary function of the respiratory system?
a) Oxygenation of the blood
b) Pumping blood to the body
c) Digesting food
d) Regulating body temperature
Which of the following is an example of a non-communicable disease?
a) Tuberculosis
b) HIV/AIDS
c) Diabetes
d) Influenza
What is the purpose of a vaccine?
a) To stimulate an immune response
b) To treat bacterial infections
c) To lower blood pressure
d) To relieve pain
Which of the following is a major risk factor for developing cancer?
a) Physical activity
b) Healthy diet
c) Tobacco use
d) Adequate sleep
What is the function of the liver in the human body?
a) Detoxifying harmful substances
b) Pumping blood to the body
c) Producing insulin
d) Filtering urine
Which of the following is a method used to visualize internal body structures?
a) X-ray
b) ECG
c) Blood test
d) Blood pressure measurement
What is the term for the chronic inflammation of the joints?
a) Arthritis
b) Diabetes
c) Hypertension
d) Asthma
Which of the following is an example of a central nervous system disorder?
a) Parkinson’s disease
b) Asthma
c) Diabetes
d) Hypertension
What is the purpose of an electrocardiogram (ECG)?
a) To measure the electrical activity of the heart
b) To assess lung function
c) To monitor blood pressure
d) To evaluate kidney function
Which of the following is a method used to diagnose medical conditions using sound waves?
a) X-ray
b) MRI
c) Ultrasound
d) CT scan
What is the function of the adrenal glands in the body?
a) Producing hormones such as adrenaline
b) Digesting food
c) Filtering waste products from the blood
d) Regulating body temperature
Which of the following is a method used to measure blood pressure?
a) ECG
b) X-ray
c) Pulse oximetry
d) Sphygmomanometer
What is the purpose of an MRI scan?
a) To visualize soft tissues and organs
b) To measure blood pressure
c) To assess lung function
d) To evaluate kidney function
Which of the following is a method used to measure lung function?
a) X-ray
b) Blood test
c) ECG
d) Spirometry
What is the role of platelets in the blood?
a) Blood clotting
b) Transporting oxygen
c) Fighting infection
d) Regulating body temperature
Which of the following is an example of an autoimmune disease?
a) Rheumatoid arthritis
b) Influenza
c) Tuberculosis
d) Malaria
What is the term for the branch of medicine that focuses on the treatment of cancer?
a) Oncology
b) Cardiology
c) Neurology
d) Endocrinology
Which of the following is a method used to diagnose diseases by examining body tissues under a microscope?
a) X-ray
b) MRI
c) Biopsy
d) Ultrasound
What is the purpose of anesthesia in surgical procedures?
a) To induce sleep
b) To relieve pain
c) To control blood pressure
d) To regulate body temperature
Which of the following is a method used to measure blood glucose levels?
a) ECG
b) Spirometry
c) Blood test
d) Sphygmomanometer
What is the function of the small intestine in the digestive system?
a) Absorption of nutrients
b) Pumping blood to the body
c) Regulating body temperature
d) Filtering urine
Which of the following is a method used to diagnose diseases using radioactive substances?
a) X-ray
b) MRI
c) CT scan
d) Nuclear medicine imaging
What is the term for the study of the causes and origins of diseases?
a) Epidemiology
b) Genetics
c) Pathology
d) Histology
Which of the following is a method used to measure bone density?
a) X-ray
b) MRI
c) ECG
d) Dual-energy X-ray absorptiometry (DEXA)
What is the term for the process of removing waste products from the body?
a) Excretion
b) Respiration
c) Digestion
d) Circulation
Which of the following is a method used to monitor heart activity over a period of time?
a) ECG
b) X-ray
c) Blood test
d) Holter monitor
What is the function of the thyroid gland in the body?
a) Regulating metabolism
b) Pumping blood to the body
c) Producing insulin
d) Filtering urine
Which of the following is a method used to diagnose diseases by analyzing the DNA of an individual?
a) X-ray
b) MRI
c) Blood test
d) Genetic testing
What is the term for the study of drugs and their effects on the body?
a) Pharmacology
b) Anatomy
c) Physiology
d) Pathology
Which of the following is a method used to monitor oxygen levels in the blood?
a) X-ray
b) ECG
c) Blood test
d) Pulse oximetry
What is the purpose of a cardiac catheterization?
a) To assess lung function
b) To measure blood pressure
c) To visualize blood vessels of the heart
d) To evaluate kidney function
Which of the following is a method used to measure brain activity?
a) ECG
b) EEG
c) Blood test
d) MRI
What is the term for the surgical removal of the appendix?
a) Appendectomy
b) Tonsillectomy
c) Hysterectomy
d) Mastectomy
Which of the following is a method used to measure kidney function?
a) X-ray
b) ECG
c) Blood test
d) Creatinine clearance test
What is the function of the pituitary gland in the body?
a) Regulating other endocrine glands
b) Digesting food
c) Filtering waste products from the blood
d) Regulating body temperature
Which of the following is a method used to monitor brain activity and diagnose neurological disorders?
a) EEG
b) ECG
c) Blood test
d) X-ray
What is the term for the process of delivering oxygen to the body’s tissues and removing carbon dioxide?
a) Respiration
b) Circulation
c) Digestion
d) Excretion
Which of the following is a method used to measure electrical activity in the heart?
a) ECG
b) EEG
c) Blood test
d) X-ray
What is the term for the process of surgically repairing a fractured bone?
a) Reduction
b) Resection
c) Reconstruction
d) Transplantation
Which of the following is a method used to diagnose diseases by analyzing a sample of body fluid?
a) X-ray
b) MRI
c) Blood test
d) CT scan
What is the function of the pancreas in the body?
a) Producing insulin and digestive enzymes
b) Pumping blood to the body
c) Filtering waste products from the blood
d) Regulating body temperature
Which of the following is a method used to measure visual acuity?
a) X-ray
b) ECG
c) Blood test
d) Snellen chart
What is the term for the process of restoring lost function to the body through therapy and rehabilitation?
a) Rehabilitation
b) Resuscitation
c) Regeneration
d) Reproduction
Which of the following is a method used to measure kidney function and detect abnormalities?
a) X-ray
b) ECG
c) Blood test
d) Renal function test
What is the purpose of an endoscopy?
a) To visualize internal organs and tissues
b) To measure blood pressure
c) To assess lung function
d) To evaluate kidney function
Which of the following is a method used to diagnose diseases by analyzing the structure and function of cells?
a) X-ray
b) MRI
c) Biopsy
d) Blood test
What is the term for the surgical removal of a tumor?
a) Excision
b) Incision
c) Resection
d) Transplantation
Which of the following is a method used to monitor blood sugar levels over a period of time?
a) X-ray
b) ECG
c) Blood test
d) Continuous glucose monitoring
What is the function of the gallbladder in the body?
a) Storing and releasing bile
b) Digesting food
c) Filtering waste products from the blood
d) Regulating body temperature
Which of the following is a method used to diagnose diseases by analyzing the structure and function of the heart?
a) ECG
b) MRI
c) Biopsy
d) Blood test
What is the term for the process of surgically opening a blocked artery to restore blood flow?
a) Angioplasty
b) Amputation
c) Appendectomy
d) Arthroscopy