Bio 117, practice test #1: the nervous system

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  1. True or false (if false, correct the statement to make it true)
    • Impulses for higher cognitive functions such as memory and learning are conducted through cranial nerves.
    • FALSE: all impulses for higher cognitive functions are located in the central nervous system. The cranial nerves are a part of the peripheral nervous system
  2. True or false (if false, correct the statement to make it true)

    There are 31 pairs of spinal nerves and 31 pairs of peripheral nerves in the peripheral nervous system
    FALSE: there are 31 pairs of spinal nerves but 43 pairs of peripheral nerves
  3. The following are correct regarding neurons and nerves (up to two correct answers may be present):
    • A) Peripheral nerves are bundles of neuron axons
    • B) Peripheral nerves are bundles of neurons
    • C) Action potentials travel along neuron dendrites
    • D) Neurons always have multiple axons and multiple dendrites
    • E) All neuron cell bodies are located in the CNS
    • A
  4. The following are correct regarding neurons and nerves (up to two correct answers may be present):
    • A) The sympathetic system is a part of the CNS
    • B) The parasympathetic system is a part of the PNS
    • C) The parasympathetic system is a part of the autonomic nervous system
    • D) The sympathetic system is a part of the somatic nervous system
    • E) The autonomic nervous system is a part of the central nervous system
    • B&C
  5. Fill in the blanks based on the following impulse information:
    • An efferent impulse targeting a sweat gland on the arm
    • A) Impulse type:____________________
    • B) Starting point:____________________
    • C) Ending point:_____________________
    • D) Root:____________________________
    • E) Ramus:__________________________
    • F) Somatic or Visceral:_________________
    • A) Motor
    • B) CNS
    • C) sweat gland
    • D) Anterior/ventral
    • E) Anterior/Ventral
    • F) Visceral
  6. Fill in the blanks based on the following impulse information:
    • An efferent impulse targeting a digestive organ
    • A) Impulse type:____________________
    • B) Starting point:____________________
    • C) Ending point:_____________________
    • D) Root:____________________________
    • E) Ramus:__________________________
    • F) Somatic or Visceral:_________________
    • A) motor
    • B) CNS
    • C) Digestive organ
    • D) Anterior/ventral
    • E) Anterior/ventral
    • F) Visceral
  7. Fill in the blanks based on the following impulse information:
    • An afferent impulse targeting an intrinsic posterior neck muscle
    • A) Impulse type:____________________
    • B) Starting point:____________________
    • C) Ending point:_____________________
    • D) Root:____________________________
    • E) Ramus:__________________________
    • F) Somatic or Visceral:_________________
    • A) sensory
    • B) intrinsic posterior neck muscle
    • C) CNS
    • D) posterior/dorsal
    • E) posterior/dorsal
    • F) somatic
  8. Fill in the blanks based on the following impulse information:
    • An afferent impulse a leg muscle
    • A) Impulse type:____________________
    • B) Starting point:____________________
    • C) Ending point:_____________________
    • D) Root:____________________________
    • E) Ramus:__________________________
    • F) Somatic or Visceral:_________________
    • A) sensory
    • B) leg muscle
    • C) CNS
    • D) posterior/dorsal
    • E) anterior/ventral
    • F) somatic
  9. Describe how substances tend to move in the absence of energy and give the name for this type of movement.
    It is called diffusion. Substances tend to diffuse along the concentrate gradient, meaning from areas of high concentration to areas of low concentration.
  10. When diffusing, will K+ tend to move into or out of the cell and why?
    K+ will tend to diffuse out of the cell because there is a higher concentration of K+ inside the cell relative to outside.
  11. True or false (if false, correct the statement to make it true):
    • The intracellular charge of a neuron is negative relative to the extracellular charge.
    • TRUE
  12. True or false (if false, correct the statement to make it true):
    • a sodium-potassium pump pumps 3 sodium ions into the neuron
    • FALSE. It pumps 3 sodium ions out of the neuron
  13. _______________ describes the charge inside of a neuron relative to the charge outside of a neuron.
    Membrane potential
  14. _______________ describes the movement of substances against the concentration gradient.
    Active transport
  15. True or false (if false, correct the statement to make it true):
    • All depolarization events result in an action potential.
    • FALSE, an action potential is generated only when the net change from a series of  depolarization events causes a change in membrane potential to cross the threshold level.
  16. True or false (if false, correct the statement to make it true):
    • Action potentials are the result of hyperpolarization
    • FALSE. They are the result of depolarization.
  17. True or false (if false, correct the statement to make it true):

    The 6th cervical nerve exits the spinal column inferior to the 6th cervical vertebra.
    FALSE: it exits the spinal column superior  to the 6th cervical vertebra.
  18. Which root does an efferent impulse travel to exit the spinal cord and why?
    An efferent impulse travels out of the anterior root because organisms always seek to conserve energy (we're lazy) and efferent cell bodies and axons are located in the anterior portion of the spinal cord, closest to the anterior root.
  19. What is a mixed nerve and provide one example in the body.
    A mixed nerve is a nerve that conducts afferent and efferent impulses. All of the spinal nerves and peripheral nerves (and some of the cranial nerves, as we will learn next week) are mixed nerves.
  20. What is the name of the nerve that exits the vertebral column inferior to the 12th thoracic vertebra?
    T 12 (AKA T XII or the 12th thoracic nerve)

Card Set Information

Author:
ChathamBio502
ID:
327389
Filename:
Bio 117, practice test #1: the nervous system
Updated:
2017-01-13 21:13:10
Tags:
nervous system anatomy
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Description:
Questions pertaining to lectures 1-4
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