Answer:
b. The rats press the lever least when cocaine is presented.
Explanation:
Reinforcement or reward refers to the physiological processes by which a given behavior, such as drug use, becomes habitual. This occurs when neurons release the neurotransmitter dopamine to the nucleus accumbens (NAc) after drug use.
In tobacco, nicotine is the main component triggering of the reinforcement. Once inside the brain, nicotine activates nicotinic receptors, which in turn contributes to the reinforcement mechanism. Following repeated exposure to nicotine, a neuroadaptation process is established for some (but not all) effects of nicotine. Increased brain nAChRs (acetylcoline receptors) are observed in response to desensitization of these nicotine-mediated receptors. This desensitization can play an important role in the development of tolerance and dependence.
The fact that nicotine is a weak reinforcer, means that maybe the rat already had an neuroadaptation with this drug, not feeling anything with this drug anymore, and thats why he would prefer other drug, like cocaine, pressing the lever of nicotine less often.
It is important for teens to eat well because they are growing and need energy and they need to stay healthy.
<em>The Weasel sleeps in a burrow, during the hottest part of the day.
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<h2>Further explanation
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Weasel is a common name for a group of predatory mammals (carnivores) of the Viverridae tribe. These animals are mostly nocturnal and good climbers.
Weasel types:
- Weasel (Cynogale bennettii)
- Weasel rase (Viverricula malaccensis sin. Viverricula indica)
- Civet Weasel (Paradoxurus Hermaphroditus)
- Root Weasel (Arctogalidia trivirgata)
- Weasel Galing (Paguma larvata)
- Binturong (Arctictis binturong)
- Linsang (Prionodon linsang)
- Tenggalung (Viverra tangalunga)
Learn more
about the ferret brainly.com/question/11489479
types of weasel brainly.com/question/11489479
Details
Class: High School
Subject: Health
Keywords: Weasel, Weasel types, Animals
Answer: Vitamins
Explanation:
Vitamins play a very vital role in the human system, they are considered as essential nutrients which perform hundreds of roles in the body, some of those roles are building the bones, healing wounds, strengthen the immune system, repair damaged cells and conversion of food to energy. It's function spans into 13different category.
