EndocrinologyIntermediate
Type 2 Diabetes
Glucose supplies energy, and insulin helps it enter body cells.
2 lessons · 10 min
Medical Library
30 subjects · 43 courses · 87 lessons
43 study guides
HematologyIntermediate
Anemia
Anemia means there are not enough healthy red blood cells to deliver oxygen adequately.
2 lessons · 10 min
NephrologyIntermediate
Chronic Kidney Disease
Chronic kidney disease usually develops through a slow decline over months or years.
2 lessons · 10 min
Respiratory MedicineIntermediate
Asthma
Asthma is a chronic disease of the airways carrying air into and out of the lungs.
2 lessons · 10 min
DermatologyIntermediate
Atopic Dermatitis
Atopic dermatitis is chronic eczema with itchy, scaly skin eruptions.
2 lessons · 10 min
NutritionBeginner
Balanced Nutrition
Nutrition supplies energy and the nutrients required for growth, repair, and normal function.
2 lessons · 10 min
GastroenterologyIntermediate
Gastroesophageal Reflux Disease
Reflux occurs when the muscle at the lower esophagus fails to close properly or relaxes at the wrong time.
2 lessons · 10 min
ImmunologyIntermediate
Vaccines and Immune Protection
Vaccines teach immune defenses to recognize specific harmful germs.
2 lessons · 10 min
GeneticsIntermediate
DNA and Genetic Testing
Genetic tests identify changes in DNA, often called variants.
2 lessons · 10 min
BiochemistryIntermediate
Cholesterol and Cardiovascular Risk
Cholesterol is needed for hormones, vitamin D, and digestion-related substances, and the body makes what it needs.
2 lessons · 10 min
Public HealthBeginner
Germs, Hygiene, and Infection Prevention
Germs occur in air, soil, water, and on or within the body.
2 lessons · 10 min
Infectious DiseasesIntermediate
Influenza
Influenza is a respiratory infection caused by influenza viruses.
2 lessons · 10 min
CardiologyIntermediate
Coronary Artery Disease
Coronary arteries supply oxygen-rich blood to heart muscle.
2 lessons · 10 min
NeuroscienceIntermediate
Migraine
Migraine involves abnormal brain activity, nerve pathways, and chemical signaling, although the exact sequence remains uncertain.
2 lessons · 10 min
Musculoskeletal HealthIntermediate
Osteoporosis
Bone is living tissue that is continually removed and replaced.
2 lessons · 10 min
ImmunologyIntermediate
Allergies and Immune Reactions
An allergy occurs when immune defenses react to a substance that does not trouble most people.
2 lessons · 10 min
EndocrinologyIntermediate
Hypothyroidism
The thyroid at the front of the neck produces hormones affecting how cells use energy.
2 lessons · 10 min
GastroenterologyIntermediate
Celiac Disease
Celiac disease is a chronic immune and digestive disorder in which gluten exposure damages the small intestine.
2 lessons · 10 min
PhysiologyIntermediate
Blood Pressure Physiology
Blood pressure is the force of blood against artery walls.
2 lessons · 10 min
BiologyBeginner
Cells, Organelles, and DNA
Cells are the basic building blocks of living organisms.
2 lessons · 10 min
PharmacologyBeginner
Medicine Safety and Responsible Use
Medicine safety assessment considers benefits and harms rather than usefulness alone.
2 lessons · 10 min
PathologyIntermediate
Cancer Biology and Diagnosis
Cancer begins when normal cell regulation fails.
2 lessons · 10 min
MicrobiologyIntermediate
Bacteria, Infection, and Antibiotic Resistance
Bacteria are tiny single-celled organisms occurring in many environments and on or inside the human body.
2 lessons · 10 min
Mental HealthBeginner
Anxiety and Anxiety Disorders
Anxiety is fear, dread, or uneasiness and can include tension, sweating, restlessness, or a pounding heart.
2 lessons · 10 min
Reproductive HealthBeginner
Pregnancy and Prenatal Care
Prenatal care means regular visits during pregnancy rather than waiting until delivery or a problem becomes obvious.
2 lessons · 10 min
AnatomyBeginner
The Heart: Chambers, Valves, and Blood Flow
The right atrium, right ventricle, left atrium, and left ventricle form four chambers.
3 lessons · 15 min
BiologyBeginner
Cell Foundations: Organelles and Genetic Instructions
Cells provide structure, take in nutrients, convert energy, and carry out specialized work.
2 lessons · 10 min
NeuroscienceIntermediate
Nervous System Organization and Evaluation
The central nervous system consists of brain and spinal cord.
2 lessons · 10 min
PharmacologyBeginner
How Medicines Work and Are Used Safely
Medicines treat disease and improve health.
2 lessons · 10 min
PhysiologyIntermediate
High Blood Pressure: Risks and Management
Blood pressure is force against artery walls.
2 lessons · 10 min
GastroenterologyIntermediate
The Liver: Functions and Disease
The liver is the largest organ inside the body and helps digest food, store energy, and remove toxins.
2 lessons · 10 min
MicrobiologyIntermediate
Tuberculosis: Latent Infection and Active Disease
Mycobacterium tuberculosis usually affects lungs but can involve kidneys, spine, or brain.
2 lessons · 10 min
MicrobiologyIntermediate
Digestive Bacteria and Probiotics
Intestines contain different bacteria in a balance.
2 lessons · 10 min
Musculoskeletal HealthIntermediate
Vitamin D, Calcium, and Bone Health
Vitamin D helps absorb calcium, an important bone component.
2 lessons · 10 min
NeuroscienceIntermediate
Brain Tumors: Symptoms and Evaluation
A brain tumor is abnormal cell growth in brain tissue.
2 lessons · 10 min
Respiratory MedicineIntermediate
Airways and Bronchiectasis
Bronchiectasis involves damage and lasting widening of larger airways.
2 lessons · 10 min
RheumatologyIntermediate
Rheumatoid Arthritis
An autoimmune disease in which the immune system attacks the lining of the joints.
2 lessons · 10 min
OphthalmologyIntermediate
Glaucoma
A group of eye diseases that damage the optic nerve and can cause irreversible vision loss.
2 lessons · 10 min
Ear, Nose & ThroatBeginner
Hearing Loss
How hearing works, why it declines, and what can be done about hearing loss.
2 lessons · 10 min
UrologyBeginner
Kidney Stones
Hard mineral deposits that form in the kidneys and can cause intense pain as they pass.
2 lessons · 10 min
GeriatricsIntermediate
Alzheimer's Disease
The most common cause of dementia, a progressive brain disease that erodes memory and thinking.
2 lessons · 10 min
OncologyIntermediate
Breast Cancer
The most common cancer in women worldwide: risk factors, detection, and treatment.
2 lessons · 10 min
Sleep MedicineBeginner
Insomnia
Difficulty falling or staying asleep, why it happens, and how healthy sleep habits help.
2 lessons · 10 min