KIN 3385 Exam 2 Questions With Correct
Answers
What |are |the |2 |major |divisions |of |the |nervous |system?
CNS |and |PNS
What |is |the |CNS?
central |nervous |system; |brain |and |spinal |cord
What |is |the |PNS?
Connections |from |muscles, |glands, |sensory |organs, |etc. |to |CNS
What |are |the |2 |subdivisions |of |the |peripheral |nervous |system?
Somatic |and |Autonomic |nervous |system
What |are |the |2 |subdivisions |of |the |Autonomic |nervous |system?
Sympathetic |and |parasympathetic
What |are |the |2 |major |cell |categories?
neurons |and |glial |cells
,What |are |neurons?
communicates |via |electrical |action |potentials
What |are |glial |cells?
support |neurons, |not |excitable
Where |do |action |potentials |usually |start?
the |axon |hillock
What |receive |the |messages |of |an |action |potential?
dendrites
What |pass |new |signals?
axon |and |terminals
What |are |the |myelinated |cells |in |the |CNS?
oligodendrocytes
,What |are |the |myelinated |cells |in |the |PNS?
Schwann |cells
Which |myelinated |cells |are |more |metabolically |efficient?
oligodendrocytes
Why |are |oligodendrocytes |metabolically |more |efficient?
need |fewer |Na+/K+-ATPase |pumps, |they |only |appear |at |nodes |of |Ranvier
Is |an |afferent |neuron |sensory |or |motor |information?
sensory
1 |multiple |choice |option
Is |an |efferent |neuron |sensory |or |motor |information?
motor
Where |do |afferent |neurons |typically |have |an |axon?
where |the |soma |splits |off |from |the |middle
Where |are |interneurons?
, entirely |in |CNS
Where |are |afferent |and |efferent |neurons?
mostly |in |PNS |but |span |in |both |CNS |and |PNS
Are |there |more |interneurons |or |afferent/efferent |neurons?
interneurons
1 |multiple |choice |option
What |is |electrical |potential?
potential |ability |for |opposing |charges |to |do |work |if |allowed |to |come |together
What |is |potential |difference?
the |magnitude |of |the |electrical |potential |determined |by |difference |in |charges, |measured |in |
volts/millivolts
What |is |membrane |potential?
potential |difference |across |a |cell |membrane
If |the |membrane |potential |is |getting |less |negative |what |happens(doesn't |go |past |0)?
Answers
What |are |the |2 |major |divisions |of |the |nervous |system?
CNS |and |PNS
What |is |the |CNS?
central |nervous |system; |brain |and |spinal |cord
What |is |the |PNS?
Connections |from |muscles, |glands, |sensory |organs, |etc. |to |CNS
What |are |the |2 |subdivisions |of |the |peripheral |nervous |system?
Somatic |and |Autonomic |nervous |system
What |are |the |2 |subdivisions |of |the |Autonomic |nervous |system?
Sympathetic |and |parasympathetic
What |are |the |2 |major |cell |categories?
neurons |and |glial |cells
,What |are |neurons?
communicates |via |electrical |action |potentials
What |are |glial |cells?
support |neurons, |not |excitable
Where |do |action |potentials |usually |start?
the |axon |hillock
What |receive |the |messages |of |an |action |potential?
dendrites
What |pass |new |signals?
axon |and |terminals
What |are |the |myelinated |cells |in |the |CNS?
oligodendrocytes
,What |are |the |myelinated |cells |in |the |PNS?
Schwann |cells
Which |myelinated |cells |are |more |metabolically |efficient?
oligodendrocytes
Why |are |oligodendrocytes |metabolically |more |efficient?
need |fewer |Na+/K+-ATPase |pumps, |they |only |appear |at |nodes |of |Ranvier
Is |an |afferent |neuron |sensory |or |motor |information?
sensory
1 |multiple |choice |option
Is |an |efferent |neuron |sensory |or |motor |information?
motor
Where |do |afferent |neurons |typically |have |an |axon?
where |the |soma |splits |off |from |the |middle
Where |are |interneurons?
, entirely |in |CNS
Where |are |afferent |and |efferent |neurons?
mostly |in |PNS |but |span |in |both |CNS |and |PNS
Are |there |more |interneurons |or |afferent/efferent |neurons?
interneurons
1 |multiple |choice |option
What |is |electrical |potential?
potential |ability |for |opposing |charges |to |do |work |if |allowed |to |come |together
What |is |potential |difference?
the |magnitude |of |the |electrical |potential |determined |by |difference |in |charges, |measured |in |
volts/millivolts
What |is |membrane |potential?
potential |difference |across |a |cell |membrane
If |the |membrane |potential |is |getting |less |negative |what |happens(doesn't |go |past |0)?
