NEET MDS Shorts
52215
PhysiologyThe primary mechanism of sodium reabsorption in the distal convoluted tubule and collecting ducts is active transport with the sodium-potassium ATPase pump.
47630
Physiology
Wernicke's aphasia is associated with lesions in the temporal lobe's auditory association area, particularly Brodmann's area 22. It is characterized by fluent speech with impaired comprehension and repetition.
60930
PhysiologyADH acts on the distal tubules and collecting ducts of the kidney to increase the permeability of the tubular epithelium to water. This results in the reabsorption of water and the concentration of urine, thereby reducing urine volume and increasing blood pressure.
94205
PhysiologyThe ascending limb of the Loop of Henle is impermeable to water, allowing for the reabsorption of solutes while preventing water from following.
39341
PhysiologyThe primary function of the descending limb of the Loop of Henle is the reabsorption of water, which concentrates the tubular fluid as it descends.
18233
PhysiologyThe macula densa is found in the distal convoluted tubule, where it senses sodium chloride concentration and helps regulate glomerular filtration rate.
68993
Physiology
Answer: 1) Activation of glycogen phosphorylase by epinephrine
Explanation: Epinephrine acts on the beta-adrenergic receptors of liver and muscle cells, which activate protein kinase. This kinase then phosphorylates and activates glycogen phosphorylase, an enzyme that breaks down glycogen into glucose-1-phosphate, which is rapidly converted to glucose-6-phosphate for use in glycolysis or for release into the bloodstream to maintain glucose levels during stress.
88499
Physiology
REM sleep is characterized by beta-wave activity, dreaming, and muscular atonia, which is a state of almost complete paralysis except for the muscles controlling eye movement, respiration, and other involuntary processes.
24680
PhysiologyBile acids are actively reabsorbed in the ileum, primarily by the sodium-dependent bile acid transporter (ASBT), and returned to the liver.
73717
PhysiologyLuteinizing hormone (LH) stimulates the development of the corpus luteum and the secretion of progesterone, which is crucial for maintaining the uterine lining.