Instructions

The effect of acetylcholine on these receptors (heart) involve activation of Gi protein and high entry of potassium ion The antagonist of these receptors will inhibit the heart function but activate Gi motility and secretion. These receptors could be blocked by atropine The effect of acetylcholine on these receptors (smooth muscles and glands) involve activation of Gq protein and increase Calcium ion inside the cell Which of the following pairs are not correct? If the total inhibitory effects are greater than the excitatory effects the membrane depolarizes (EPSP) _ neuron will be partially depolarized If the total excitatory effects are greater than the total inhibitory effects but less than the threshold level of stimulation…neuron will be partially depolarized If the total excitatory effects are greater than the total inhibitory effects and threshold is reached one or more nerve impulses (action potentials) will be triggered If the total inhibitory effects are greater than the excitatory effects, the membrane hyperpolarizes (IPSP)_. Inhibition of the postsynaptic neuron and an inability to generate a nerve impulse. The main functions of nervous system include: All the options are major functions of nervous system. Detection and Information gathering by sensory systems. Analysis and Integration of information by the CNS. Transmission and generation signals to motor and autonomic pathways which control muscles movement and visceral endocrine functions. Which of the following statement is not correct? Activation of beta 1 receptors are mainly led to increase in the cardiac output Beta 1 receptors are only sensitive for norepinephrine neurotransmitter Beta receptors are highly abundant on the heart. Activation of beta 1 receptors involves stimulation of Gs protein and Increase CAMP

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