Please find the 4 true statements among the 12 listed below.Write down True or False
next to each sentence please.
ï‚· The axon arises from the perikaryon in an area devoid of Nisslsubstance, the axon
hillock.
ï‚· Schwann cells form myelin sheaths around the axons in the centralnervous system.
ï‚· Neurons, astrocytes, oligodendrocytes, ependymal cells andmicroglial cells all are
derived from neuroectoderm.
ï‚· The telencephalic vesicles become the third ventricle.
ï‚· Oxyphil cells are acidophilic cells containing abundantcytoplasmic granules filled
with parathyroid hormone.
ï‚· In addition to the unmyelinated axons from hypothalamicneurosecretory neurons,
the adeno hypophysisal also contains pituicytes.
ï‚· The axons of the rods and cones project in to the outer plexiformlayer of retina and
synapse with dendrites of ganglion cells.
ï‚· Cornea is the transparent anterior outer most layer of the eyethat lacks blood
vessels and nerve endings.
ï‚· In the cochlea there is kinocilium.
ï‚· Perilymph is extracellular fluid that fills the bonylabyrinth.
ï‚· Inner ear develops from surface ectoderm.
ï‚· The portion of each optic vesicle that interacts with the surfaceectoderm induces
that area of the ectoderm to form a thickening called the lensplacode (a precursor of
the lens).
