ATI RN
Questions Neurological System Questions
Question 1 of 5
Which is the most common neurotransmitter in the brain?
Correct Answer: B
Rationale: Glutamate is the most abundant excitatory neurotransmitter in the brain and is involved in nearly all excitatory brain functions. It plays a key role in synaptic plasticity, learning, and memory. Glutamate binds to receptors on postsynaptic neurons, promoting the transmission of signals. However, excessive glutamate activity can lead to excitotoxicity, causing neuronal damage and contributing to conditions like stroke and neurodegenerative diseases.
Question 2 of 5
One way of dealing with memory impairments is to train patients in ways to help store and retrieve items and events to be remembered. One such technique is the use of:
Correct Answer: A
Rationale: Visual imagery mnemonics is a memory enhancement technique that involves creating vivid mental images to aid in the storage and retrieval of information. By associating new information with familiar visual cues, individuals can improve their ability to remember details and events. This technique is particularly useful for individuals with memory impairments, as it leverages the brain's natural ability to process and recall visual information more effectively than abstract concepts.
Question 3 of 5
Axoplasm is the ________ .
Correct Answer: D
Rationale: Axoplasm is the cytoplasm of the axon, the long, slender projection of a neuron that transmits nerve impulses. It contains organelles, cytoskeletal elements, and other components necessary for maintaining the axon's structure and function. Axoplasm plays a crucial role in the transport of molecules and organelles between the cell body and the axon terminals, ensuring the proper functioning of the neuron.
Question 4 of 5
Acetylcholine and norepinephrine act because of their affect on receptors at the ________ membrane.
Correct Answer: D
Rationale: Acetylcholine and norepinephrine exert their effects by binding to receptors on the postsynaptic membrane of neurons. When these neurotransmitters bind to their receptors, they trigger changes in the postsynaptic neuron's membrane potential, either exciting or inhibiting the neuron. This interaction is essential for transmitting signals across synapses and enabling communication within the nervous system.
Question 5 of 5
Millions of sensory receptors detect changes, called ________, which occur inside and outside the body.
Correct Answer: D
Rationale: Sensory receptors detect changes, known as stimuli, which occur both inside and outside the body. These stimuli can include temperature, pressure, light, and chemical changes. Neurons are the cells that transmit these signals, while the skin is an organ that contains sensory receptors. Motor refers to the output of the nervous system, such as muscle movement. Stimuli is the correct answer as it refers to the changes detected by sensory receptors.