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प्रश्न
The supporting cells that produce myelin sheath in the PNS are _________.
पर्याय
Oligodendrocytes
Satellite cells
Astrocytes
Schwann cells
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उत्तर
The supporting cells that produce myelin sheath in the PNS are Schwann cells.
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संबंधित प्रश्न
The nervous system of mammals uses both electrical and chemical means to send signals via neurons. Which part of the neuron receives impulse?
Receptors for protein hormones are located ________.
Match the organism with the type of nervous system found in them.
| 1. Neurons | a. Earthworm |
| 2. Ladder-type | b. Hydra |
| 3. Ganglion | c. Flatworm |
| 4. Nerve net | d. Human |
Answer the following.
Complete the table.
| Location | Cell Type | Function |
| PNS | ___________ | Produce myelin sheath |
| PNS | Satellite cells | _____________ |
| ___________ | Oligodendrocytes | Form myelin sheath around central axon |
| CNS | ___________ | Phagocytose pathogens |
| CNS | ___________ | Form the epithelial lining of brain cavities and central canal. |
Long answer question
Draw the neat labelled diagram of Multipolar Neuron.
Answer the following question.
Identify and name the type of tissue in the following:
Skin
Match the following:
| 'A' Group | 'B' Group |
| 1. Muscle | a. Perichondrium |
| 2. Bone | b. Sarcolemma |
| 3. Nerve cell | c. Periosteum |
| 4. Cartilage | d. Neurilemma |
What is the covering of nerve fascicule called?
Covering of bundle of nerves is ______.
Match column-I showing neuroglial cells with their functions in column-II:
| Column I | Column II | ||
| i. | Astrocytes | a. | production of CSF. |
| ii. | Oligodendrocytes | b. | maintenance of blood brain barrier |
| iii. | Ependymal cells | c. | formation of white matter of CNS. |
| iv. | Schwann cells | d. | production of myelin sheath around medullated nerves of PNS. |
