HOSMERIT
PHAR 100- MODULE 2 EXAM QUESTIONS AND
DETAILED ANSWERS
The 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
Hindbrain: Pons - ANSWER -connect the midbrain to the medulla and cerebellum
-involved in conducting signals from the cerebral cortex down the medulla and cerebellum
Hindbrain: medulla - ANSWER - site of origin of many nerve cells
- where the regulation of some involuntary activity occurs
- a # of drugs that depress respiration and blood pressure do so by depressing the medulla
hindbrain: cerebellum - ANSWER - responsible for coordination and posture
- doesn't initiate movement, but organizes voluntary activity initiated elsewhere
- drugs that effect the cerebellum will cause ataxi ( ex. alcohol causes lack of coordination)
The Neuron - ANSWER -functional suit of the brain that can transmit electric signals
- neurons are continually generated and neural connections are continually reshaped
neuroplasticity
Dendrites - ANSWER - complex branching patterns that receive antennae for incoming
information via receptors on the dendrite membrane
-when info is received from other cells, and electric current gets sent down axon
PHAR 100- MODULE 2 EXAM QUESTIONS AND
DETAILED ANSWERS
The 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
Hindbrain: Pons - ANSWER -connect the midbrain to the medulla and cerebellum
-involved in conducting signals from the cerebral cortex down the medulla and cerebellum
Hindbrain: medulla - ANSWER - site of origin of many nerve cells
- where the regulation of some involuntary activity occurs
- a # of drugs that depress respiration and blood pressure do so by depressing the medulla
hindbrain: cerebellum - ANSWER - responsible for coordination and posture
- doesn't initiate movement, but organizes voluntary activity initiated elsewhere
- drugs that effect the cerebellum will cause ataxi ( ex. alcohol causes lack of coordination)
The Neuron - ANSWER -functional suit of the brain that can transmit electric signals
- neurons are continually generated and neural connections are continually reshaped
neuroplasticity
Dendrites - ANSWER - complex branching patterns that receive antennae for incoming
information via receptors on the dendrite membrane
-when info is received from other cells, and electric current gets sent down axon
