NEET MDS Shorts
652159
PhysiologyThe primary role of the cephalic phase of gastric acid secretion is the secretion of gastric juices in response to the thought or smell of food, preparing the digestive system for incoming food.
768078
PhysiologyNeutralization of stomach acid is NOT an action of bile salts; bile salts primarily emulsify fats and facilitate fat absorption.
467851
PhysiologyAcetylcholine, released by the vagus nerve, acts on the SA node to slow down the heart rate by hyperpolarizing the membranes of the SA node cells and decreasing their automaticity.
285540
PhysiologyIn the sympathetic nervous system, the pre-to-post ganglionic fiber ratio of 1:20 to 1:100 indicates that there are fewer postganglionic fibers than preganglionic fibers. This ratio suggests that each preganglionic neuron synapses with multiple postganglionic neurons, thereby amplifying the sympathetic response to a given input.
705329
PhysiologyThe epididymis is a coiled tubular structure located behind the testis. Its primary function is to store and mature sperm cells, making them fully motile and capable of fertilization.
684183
PhysiologyAnswer: 4) Increased parathyroid hormone during pregnancy stimulates liberation of calcium ions from maternal bones for the fetus's calcium needs.
157831
PhysiologyDefective bile acid absorption primarily leads to fat malabsorption and vitamin deficiencies, including vitamin K, but not directly to hemolytic anemia.
110013
PhysiologyThe cholinergic system, which is part of the parasympathetic nervous system, stimulates the parietal cells in the stomach to release hydrochloric acid (HCL) through the activation of muscarinic M1 receptors. This is crucial for the digestion of food and the maintenance of gastric pH.