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PHAR 100- Module 2 Exam Questions And Correct Answers
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PHAR 100- Module 2 Exam Questions And Correct AnswersThe nervous system - ANSWER specialized to recognize, process, and integrate and
react to stimuli in the environment
recognize: identify changed in environment ex. change in temp
process: perceive those changes ex. body feels hot or cold
React: produce a response ex. sweat or shiver
Central Nervous System CNS - ANSWER - focuses on drugs that target the CNS
- brain and spinal chord
peripheral nervous system - ANSWER all nervous system tissues outside the CNS
(CNS) The Brain: Functions - ANSWER -receives and processes inför
-initiates a response
- stores memory
- generates thought and emotion
(CNS) spinal chord: Functions - ANSWER -carries sensory info from the skin, muscles,
joints, and internal muscles to the brain
- controls motor outflow to the muscles
-controls sensory input ex. pain sensations)
-controls reflex activity ex. breathing)
3 main part of the brain - ANSWER midbrain, forebrain, hindbrain
midbrain - ANSWER -area that links the forebrain with the hindbrain
, -relay centre for visual (eye) and auditory (ear) stimuli or signals
forebrain: Cerebral Cortex - ANSWER -largest part of the Brian, rich with nerve cells
Functions: sensory and motor coordination, mental processes, intelligence, memory,
vision, judgement, thought, speech, emotions, and consciousnesses
- can be stimulated (excited) or depressed (inhibited) by drugs
forebrain: Thalamus - ANSWER -relay centre in which impulses are transmitted to the
cerebral cortex
Function: coordinate and filter incoming signals
- involved with the appreciation of painful sensations
Forebrain: Limbic System - ANSWER -closely associated with hypothalamus
- integrates memory, emotion, and reward
- limbic system+hypothalamus: controls emotion and behaviour
- contains dopamine reward centres which are targets for drugs of abuse
Forebrain: Hypothalamus - ANSWER - very important
- located near base of the skull
- neurons in the hypothalamus produce substances called "releasing factors" which
travel to the pituitary gland and modify the release of hormones
- a number of drugs can affect the hypothalamus
Functions:
-control the involuntary functions of the body (heartbeat, blood pressure, body temp,
etc)
forebrain: pituitary gland - ANSWER -release hormones
These hormones travel and act on peripheral tissues and are involved with control of
growth, behaviour, and metabolism
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