Histo MCQ

Question 1

Nissl Bodies

Answer 1

• deeply stained.
• in the cytoplasm and extend into
  dendrites
• Functions:
   Help in the synthesis of new proteins
   Maintain continuous axonal flow to the end of axon

Question 2

Unipolar neurons

Answer 2

one process, but this branches into central & peripheral branches (pseudo unipolar).
* Located in dorsal root ganglia & some of the cranial nerve ganglia

Question 3

Bipolar neurons

Answer 3

2 processes (single dendrite & an axon).
* Located in retina, vestibular, cochlear ganglia & olfactory epithelium.

Question 4

Multipolar neurons

Answer 4

• Multiple dendrites & an axon.
• Present throughout the nervous system.

Question 5

Astrocytes

Answer 5

 Protoplasmic astrocytes in grey
matter of CNS
 Fibrous astrocytes in white matter of CNS
* Absent in pineal gland and posterior pituitary

Question 6

Oligodendrocyte

Answer 6

contain fewer processes.
*Darkest staining neuroglial cell, located
in both grey & white matter of CNS.

Question 7

Microglia

Answer 7

• Unlike other neuroglial cells which originate from neural tube (ectoderm) embryologically, microglial cells originate from mesoderm.

Question 8

Ependymal cells

Answer 8

• Lines ventricles & central canal of spinal cord.
• Derived from embryonic neuroepithelium.
• sometimes ciliated