Answer:
a) sedatives
Explanation:
The agents that produce a diminished CNS (Central Nervous System) responsiveness to stimuli without producing sleep are sedatives.
Sedatives are drugs that have a calming or soothing effect on the body and can be used to reduce anxiety, tension, and irritability. They can also be used to treat insomnia, although they do not induce sleep like hypnotics do. Sedatives work by depressing the activity of the central nervous system, which can lead to a reduction in the level of consciousness and a decrease in the responsiveness to external stimuli.
Hypnotics, on the other hand, are drugs that induce sleep and are often used to treat insomnia. GABA antagonists and barbiturates are also drugs that can produce sedation, but they can also produce sleep and have a higher risk of dependence and addiction compared to other sedatives.
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The agents that produce a diminished Central Nervous System (CNS) responsiveness to stimuli without producing sleep are sedatives. Here's the main answer to the given question:
Option (a) Sedatives
The pharmacological agents that can produce a decreased CNS responsiveness to stimuli without inducing sleep are known as sedatives. These agents are administered to patients for many purposes, including anxiety, insomnia, and tension relief. Sedatives function by altering the balance of certain chemical messengers in the brain that regulate the level of wakefulness or sleep. For instance, sedatives can cause an increase in the amount of gamma-aminobutyric acid (GABA) in the brain, which can result in a decrease in brain activity. As a result, individuals taking sedatives will be less reactive to the environment, their breathing will become slower and more regular, and their heart rate will decrease.
Thus, the agents that can produce a diminished CNS responsiveness to stimuli without producing sleep are known as sedatives. These agents work by altering the balance of specific chemical messengers in the brain, such as GABA, which can result in a decrease in brain activity. This reduces the reactivity of an individual towards their surroundings.
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Match each of the characteristics/descriptions listed below to the appropriate phylum/phyla. Some characteristics will match with more than one phylum. All the options will be used at least once.
Characteristics/Descriptions:
Protostome
Triploblastic
Coelom
Molts when grows
No circulatory system
Diploblastic
Deuterostome
Some members are marine
Phylum/Phyla:
Arthropoda
Echinodermata
Ctenophora
The phylum/phyla that match the given characteristics and descriptions are Arthropoda and Echinodermata.
Which phylum/phyla match the given characteristics and descriptions?The characteristics/descriptions can be matched with the following phylum/phyla:
Protostome: ArthropodaTriploblastic: Arthropoda, EchinodermataCoelom: Arthropoda, Echinodermata Molts when grows: ArthropodaNo circulatory system: Echinodermata Diploblastic: Echinodermata Deuterostome: EchinodermataSome members are marine: Arthropoda, EchinodermataArthropoda and Echinodermata are the phyla that match the given characteristics/descriptions. Arthropoda includes organisms like insects, spiders, and crustaceans, while Echinodermata includes organisms like starfish and sea urchins.
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which type of telescope is known to be difficult to keep aligned? a. rotating b. refracting c. reflecting d. radio
Reflecting telescopes are known to be difficult to keep aligned.
What type of telescope is challenging to maintain alignment?Reflecting telescopes, which utilize mirrors to gather and focus light, can be more challenging to keep aligned compared to other types of telescopes.
Reflecting telescopes consist of a primary mirror that gathers light and reflects it to a secondary mirror, which then directs the light to the eyepiece or camera.
The alignment of these mirrors is crucial for achieving sharp and accurate images. However, various factors can affect the alignment, such as temperature changes, vibrations, and mechanical adjustments.
To maintain the alignment of a reflecting telescope, regular adjustments and collimation are necessary.
Collimation involves aligning the optical elements of the telescope to ensure proper focus and clarity.
Achieving and maintaining precise alignment can be a delicate and time-consuming process, requiring careful attention and skill.
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