instruction:
In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
question:
Question: The thromboxanes: 
 Options:  <1> They induce platelet aggregation. <2> They inhibit platelet aggregation. <3> They act as bronchodilators in the respiratory system. <4> They are produced in the membranes of all cells. <5> They are derived from saturated fatty acids.
answer:
1


question:
Question: In the parasympathetic system: 
 Options:  <1> The preganglionic neuron is in thoracic spinal cord. <2> Postganglionic neurons have short axons. <3> Postganglionic fibers release noradrenaline. <4> Postganglionic neurons have muscarinic receptors. <5> Numerous neurons innervate vascular smooth muscle of the extremities.
answer:
2


question:
Question: What two non-protein amino acids participate in the urea cycle ?: 
 Options:  <1> Proline and hydroxyproline. <2> Ornithine and citrulline. <3> Alanine and arginine. <4> Oxalacetate and malate. <5> Serine and GABA.
answer:

2