Anatomy & Physiology
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Suppose a pill contains a combination of a stimulant and a compound that blocks glycine receptors. Based on its given action mechanism, which of the following will be experienced by the patient if the pill is taken at an excessive dosage?
If a neurotransmitter can cause hyperpolarization of the postsynaptic neuron, this neurotransmitter is considered a(n):
Glutamate can cause depolarization of the postsynaptic neuron, thus, making it more likely to fire an action potential. Glutamate is therefore considered a(n):
Acetylcholinesterase can break down the neurotransmitter acetylcholine (ACh) into choline and acetic acid, thereby terminating the signal transmission at the neuromuscular junction. What will be its effect on the muscle cell?
Which of the following is matched incorrectly?
The following are examples of amino acid neurotransmitters except:
Nicotine stimulates the sympathetic nervous system leading to an increased release of catecholamines such as adrenaline. This results in:
Oral corticosteroids, which are treatments for asthma, can also inhibit bone formation when taken for a long period of time. Therefore, oral corticosteroids can increase the likelihood of:
If the variations in the level of serotonin affect sensory interpretation and emotional states, what could be the impact of taking serotonin receptor activators such as lysergic acid diethylamide (LSD)?
What happens when norepinephrine binds to alpha-adrenergic receptors on smooth muscle cells in blood vessel walls?
During the transmission of nerve impulses in the cholinergic synapse, what happens after acetylcholine molecules diffuse across the synaptic cleft?
How do receptors at the neuromuscular junction respond to the binding of acetylcholine (ACh)?
The primary function of acetylcholine at the neuromuscular junction is to bind to receptors on the muscle cell membrane, leading to:
What happens when acetylcholine accumulates in the synaptic cleft?
Which of the following neurotransmitters serves as the primary inhibitory neurotransmitter in the central nervous system that helps regulate anxiety and has a calming effect by inhibiting neural activity?
Epinephrine and norepinephrine work with the sympathetic nervous system. What is the neurotransmitter primarily used by the parasympathetic nervous system:
Anticholinergic drugs possess the capability to impede the activity of acetylcholine. Which of the following states the effect of anticholinergic drugs on the parasympathetic nervous system?
A son brings his mother to the hospital, complaining to the doctor about his mother's memory loss regarding recent incidents. He also informs the doctor that she becomes irritable and experiences mood swings. The doctor after examining her finds out the she has Alzheimer's disease. Which of the following neurotransmitter levels is most likely to be low in her brain?