33. The cell type that is of connective tissue origin and serves as part of the

Question

33. The cell type that is of connective tissue origin and serves as part of the immune system in the brain and spinal cord (central nervous system) are:

a. Schwann cells.

b. astrocytes.

c. oligodendrocytes

d. microglia.

e. neurons.

34. Diseases that attack myelin in the central nervous are attacking the plasma membranes of:

a. Schwann cells.

b. astrocytes.
c. oligodendrocytes d. microglia.
e. neurons.

35. At the neuromuscular junction, you would expect to find synaptic vesicles in the:

a. sarcoplasmic reticulum.
b. T-tubule membrane
c. sarcolemma of the muscle cell

d. output region of the lower motor neuron e. input region of the lower motor neuron.

Explanation / Answer

33) The cell type present in the central nervous system which originates from the embryonic mesoderm is microglia. So, microglia is of connective tissue origin. Also, microglia are specialised macrophages capable of phogocytosis and protects neurons of the central nervous system. Therefore, microglia also performs immune function. So, the answer for this question is microglia (option d).

Please post other questions separately.

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