Cardiology
Which side of the heart receives deoxygenated blood from the body and pumps it toward the lungs?
What is the right side of the heart?
Which hormone, secreted by the pineal gland, helps regulate the sleep–wake cycle?
What is melatonin?
Which chemical mediator, released during mast cell degranulation, contributes to itching, redness, and increased vascular permeability?
What is histamine?
What is the hardest substance in the human body?
What is tooth enamel?
Which neurotransmitter is involved in mood regulation and is targeted by selective serotonin reuptake inhibitors (SSRIs)?
What is serotonin?
What medical term describes chest discomfort caused by insufficient oxygen delivery to the heart muscle, usually due to reduced blood flow?
What is angina pectoris?
What clusters of endocrine cells in the pancreas produce insulin and glucagon?
What are the islets of Langerhans?
What organ, located behind the sternum, is responsible for T-cell maturation?
What is the thymus?
What genetic condition is typically caused by having three copies of chromosome 21?
What is Down syndrome (trisomy 21)?
Which brain structure plays a major role in fear processing and threat detection?
What is the amygdala?
What enzyme, released by the kidneys, converts angiotensinogen into angiotensin I?
What is renin?
Which two hormones are stored and released by the posterior pituitary gland?
What are oxytocin and antidiuretic hormone (ADH)?
Which antibody class is the most abundant in serum and can cross the placenta to provide passive immunity to the fetus?
What is IgG?
What condition occurs when endometrial-like tissue grows outside the uterus, potentially causing pelvic pain and infertility?
What is endometriosis?
What neurological disorder is characterized by bradykinesia, often accompanied by resting tremor and rigidity, and is associated with loss of dopamine-producing neurons in the substantia nigra?
What is Parkinson disease?
What specialized cardiac conduction fibers transmit electrical impulses throughout the ventricular myocardium?
What are Purkinje fibers?
What condition causes enlargement of the hands, feet, and facial features due to excess growth hormone in adulthood?
What is acromegaly?
What process involves coating a pathogen with antibodies or complement proteins to make it easier for phagocytes to engulf?
What is opsonization?
What postmortem change causes purplish discoloration in dependent areas of the body due to gravitational settling of blood?
What is livor mortis?
A patient speaks fluently, but their speech lacks meaning, and they have difficulty understanding spoken language. What type of aphasia is this?
What is Wernicke aphasia?
What type of receptors in the carotid sinus and aortic arch detect changes in arterial pressure by sensing vessel-wall stretch?
What are baroreceptors?
What pituitary disorder causes excessive ACTH secretion, resulting in elevated cortisol levels and features such as central weight gain and a rounded face?
What is Cushing disease?
What type of necrosis is classically associated with tuberculosis and produces a cheese-like appearance within granulomas?
What is caseous necrosis?
What potentially life-threatening reaction to certain anesthetic agents causes muscle rigidity, increased carbon dioxide production, and a rapid rise in body temperature due to inherited susceptibility?
What is malignant hyperthermia?
A behavior becomes more frequent because performing it removes an unpleasant stimulus. What principle of operant conditioning explains this?
What is negative reinforcement?