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PHAR 100 Module 2: Drugs of Abuse Part 1 Practice Questions and Answers

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PHAR 100 Module 2: Drugs of Abuse Part 1 Practice Questions and Answers What are the 3 basic properties of the nervous system? - ANSWER-1) Recognize: identify changes in the internal/external environment ex. temp drops from 28 to 0 2)Process and Integrate: perceive changes in the environment ex...

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  • November 4, 2024
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KaylinHoffman
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PHAR 100 Module 2: Drugs of Abuse Part

1 Practice Questions and Answers


What are the 3 basic properties of the nervous system? - ANSWER✔✔-1) Recognize: identify changes in

the internal/external environment ex. temp drops from 28 to 0




2)Process and Integrate: perceive changes in the environment ex. body feels cold




3)React: produce a response or action to changes in environment ex. shiver


What is the CNS? What is the PNS? - ANSWER✔✔-CNS: brain and spinal cord


PNS: all nervous tissue outside of CNS


What is the role of the brain? - ANSWER✔✔--receives and processes information


-initiates a response


-stores memory


-generates thoughts and emotion


What is the role of the spinal cord? - ANSWER✔✔--carries sensory information from skin, muscles, joints

and internal organs to the brain


-controls motor outflow to muscles


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,Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


-controls sensory input


-controls reflex activity


What are the 3 main parts of the brain? - ANSWER✔✔-1)forebrain


2)midbrain


3)hindbrain


What are the 5 parts of the forebrain? - ANSWER✔✔-1)cerebral cortex (cerebrum): largest part of the

brain: sensory, motor coordination, mental processes




2)thalamus: relay centre which impulses are transmitted to cerebral cortex


-coordinate incoming signals, feel pain




3)hypothalamus: controls involuntary functions of the body plus feeding, drinking, sexual and emotional

responses


-neurons in hypothalamus provide substances called releasing factors which travel to pituitary to modify

it




4)limbic system: closely associated with hypothalamus


-integrates memory, emotion, reward


-controls emotion and behaviour



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-control dopaminergic receptors (drugs of abuse act on)




5)pituitary: small gland at the base of the brain secretes hormones that act on peripheral tissues


-involved in growth, behaviour, metabolism


what is the function of the midbrain? - ANSWER✔✔-links forebrain with the hindbrain


-relay centre for the visual and auditory stimuli


What are the 3 parts of the hindbrain? - ANSWER✔✔-1)Pons: connects the midbrain to the medulla and

cerebellum


-involved in conducting signals




2)Medulla: site of origin of many cranial nerves


-regulates respiration, heart rate, blood pressure, involuntary activity


-drugs that depress respiration and blood pressure do so by depressing the medulla




3)Cerebellum: responsible for coordination and posture. does not initiate movement but organizes

voluntary activity


-drugs that affect the cerebellum will cause ataxia (loss of coordination)


What is neurogenesis and neuroplasticity? - ANSWER✔✔-neurogenesis: new neurons are generated

continuously



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