The neurotransmitter secreted by primary afferent fibres for severe pain is:

Related MCQs

• The chemical agent that initiates impulses in pain fibres is:
• Which of the following is inhibitory neurotransmitter?
• Aldosterone is secreted by:
• Which of the following substances is NOT actively secreted in to the tubular lumen by the proximal renal tubule?
• At which site(s) is potassium ion secreted?
• Substance X is freely filtered by the glomerulus and is not reabsorbed, nor secreted nor metabolized. If - serum x concentration = 0.020 mg/ml renal artery x concentration = 0.020 mg/ml renal vein x concentration = 0.002 mg/ml urine x concentration = 14 mg/ml urine flow = 54 ml/hr lymphatic x concentration = 0.00001 mg/ml haematocrit = 0.45 Then the CLEARANCE of X is:
• Substance X is freely filtered by the glomerulus and is not reabsorbed, nor secreted nor metabolized. If - serum x concentration = 0.020 mg/ml renal artery x concentration = 0.020 mg/ml renal vein x concentration = 0.002 mg/ml urine x concentration = 14 mg/ml urine flow = 54 ml/hr lymphatic x concentration = 0.00001 mg/ml haematocrit = 0.45 Renal plasma flow is:
• Substance X is freely filtered by the glomerulus and is not reabsorbed, nor secreted nor metabolized. If - serum x concentration = 0.020 mg/ml renal artery x concentration = 0.020 mg/ml renal vein x concentration = 0.002 mg/ml urine x concentration = 14 mg/ml urine flow = 54 ml/hr lymphatic x concentration = 0.00001 mg/ml haematocrit = 0.45 Renal blood flow is:
• Substance X is freely filtered by the glomerulus and is not reabsorbed, nor secreted nor metabolized. If - serum x concentration = 0.020 mg/ml renal artery x concentration = 0.020 mg/ml renal vein x concentration = 0.002 mg/ml urine x concentration = 14 mg/ml urine flow = 54 ml/hr lymphatic x concentration = 0.00001 mg/ml haematocrit = 0.45 The GFR is:
• Which of the following does not increase the length of ventricular cardiac muscle fibres?