BIO 240 LAB. QUIZ 4

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BIO 240 LAB.                                                                     QUIZ 4

 

 

Answer all questions                                                   Name …………………………..

 

For questions 1 to 6, match the following descriptions with the appropriate neuroglia cells

 

 

  1. Astrocytes       F.   Anchor neurons and blood vessels, maintain extracellular environment around neurons, and assist in the formation of the blood-brain barrier

 

  1. Oligodendrocytes __ E.  Form the myelin sheath in the CNS   __

 

  1. Ependymal cells __ D.  Ciliated cells in the CNS that form and circulates cerebrospinal fluid ___

 

  1. Microglial cells __ C.  Phagocytic cells of the CNS   ___

 

  1. Satellite cells ___ B. Surround cell bodies of neurons in PNS ____

 

  1. Schwann cells ____ A.   Create the myelin sheath in the PNS __

 

  1. Where are synaptic vesicles located?

A Dendrites   B. Axon terminals   C. Cell body   D. both A and B   E.  None of these

 

  1. Name six structures of the brain you observed when you dissected the brain in the lab

 

 

 

  1. In which part of the brain is arbor vitae located?

A Medulla oblongata   B.  Thalamus   C.  Cerebellum   D.  Cerebrum   E. Spinal cord

 

 

 

  1. Name the three types of neurons based on the direction in which electrical signals move

Sensory neurons, motor neurons, and interneurons.

 

  1. Name the four regions of the brain
  1. brain stem.
  2. cerebellum.
  3. diencephalon.
  4. cerebrum.

 

 

 

 

For questions 12 to 24, match the following descriptions with the appropriate words.

 

  1. Dendrites C Neuron branches that conduct that impulse toward the cell body

 

  1. Microgilia ___A Phagocytic neuroglial ____
  2. Motor (efferent) neuron  D Transmits impulse out of the brain or spinal cord to effectors
  3. Oligodendrocyte ___B Myelin-forming neuroglial cell in brain and spinal cord____
  4. Muscles ___F Effectors of a reflex arc are glands and ____
  5. Corpus callosum M. Connects cerebral hemispheres
  6. The cervical enlargement L.   The bulge in the spinal cord that gives off nerves to the upper limb is called
  7. Spinal cord E. Each of the thirty-one segments of the spinal cord gives rise to a pair of
  8. Dura matter I Outermost layer of meninges
  9. Sensory neurons __G A knee-jerk reflex employs only ________ and motor neurons
  10. Central nervous system _ H.   Interneurons in a withdrawal reflex are located in the
  11. Skin ___J The sensory receptors of the knee jerk reflex are located in the ______
  12. Meninges K Collectively, the dura matter, arachnoid matter and pia matter are called the

 

  1. The folds  and the ridges located on the cerebrum are known as____sulci_____ and ____gyri__

 

  1. Name three types of neurons and which of these is located in nasal cavity and in the CNS

 

  1. multipolar neuron found in the Central nervous system.
  2. bipolar neuron in the nasal cavity
  • pseudounipolar neuron

 

 

  1. Name five parts of a neuron.

 

 

Cell body

Axon

Dendrites

terminal buttons,

synapse

 

 

 

 

 

  1. There are ____12____pairs of nerves originated from the brain, while there are ____31__ pairs of nerves originated from the spinal cord.