Practice Ocular Physiology questions with answers and explanations.
Choose an option to check your answer.
Erythropoietin is a renal hormone that stimulates red-cell production in bone marrow during hypoxia.
Choose an option to check your answer.
Ovulation is release of a mature oocyte from the dominant follicle after the mid-cycle luteinising hormone surge.
Choose an option to check your answer.
Primary haemostasis is formation of a platelet plug at a site of vascular injury.
Choose an option to check your answer.
Vestibulo-ocular reflex is a reflex that stabilises gaze during head movement by producing compensatory eye movement.
Choose an option to check your answer.
Aldosterone is a mineralocorticoid that increases renal sodium reabsorption and potassium secretion.
Choose an option to check your answer.
Countercurrent multiplier is a loop-of-Henle mechanism that establishes the medullary osmotic gradient for urine concentration.
Choose an option to check your answer.
Baroreceptor reflex is a rapid autonomic response that buffers short-term changes in arterial blood pressure.
Choose an option to check your answer.
Action potential refractory period is a period that limits immediate re-excitation of an excitable membrane after depolarisation.
Choose an option to check your answer.
Frank-Starling mechanism is an increase in ventricular filling produces a stronger contraction within physiological limits.
Choose an option to check your answer.
Glomerular filtration rate is the volume of plasma filtered by all functioning glomeruli per unit time.
Choose an option to check your answer.
Surfactant is a phospholipid-rich substance that lowers alveolar surface tension and helps prevent collapse.
Choose an option to check your answer.
Bohr effect is reduced haemoglobin affinity for oxygen in tissues with increased carbon dioxide or acidity.
