NSC exam questions with complete solutions

NSC exam questions with complete solutions sodium-potassium pump - Answer-Active transport mechanisms that pump Na+ ions out of neurons and K+ ions in. coexistence - Answer-The presence of more than one neurotransmitter in the same neuron. Enkalphins - Answer-The first class of endogenous opioids to be discovered. glycine - Answer-An amino acid neurotransmitter that is a constituent of many of the proteins that we eat. nondirected synapses - Answer-Synapses at which the site of neurotransmitter release and the site of neurotransmitter reception are not close together. graded responses - Answer-Responses whose magnitude is indicative of the magnitude of the stimuli that induce them. inhibitory postsynaptic potential (IPSP) - Answer-Graded post-synaptic hyperpolarizations, which decrease the likelihood that an action potential will be generated. aceytalcholine - Answer-A neurotransmitter that is created by the addition of an acetyl group to a choline molecule. Periaqueductal gray (PAG) - Answer-The gray matter around the cerebral aqueduct, which contains opiate receptors and activates a descending analgesia circuit. agonists - Answer-Drugs that facilitate the effects of a particular neurotransmitter. Epinephrine - Answer-One of the three catecholamine neurotransmitters. Carbon monoxide - Answer-A soluble-gas neurotransmitter.