Answer: Glial cells called ASTROCYTES help maintain the blood-brain barrier, whereas SCHWANN CELLS create the myelin that envelopes axons
Explanation: Glial cells are specialized cell that are found in both central and peripheral nervous systems, that surrounds the neurones, providing them with support and insulation. There are different types of Glial cells these includes:
- Astrocytes: they maintain the blood brain barrier.
- Schwann cells: create the myelin that envelopes axons of the peripheral nervous system neurones.
- satellite cells: These cells help regulate the external chemical environment of neurones.
- Microglia: they clean up cellular debris through phagocytosis.
- Oligodendrocytes: create the myelin that envelopes axons of the central nervous system
The sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.
<h3>What are nerve receptors?</h3>
Nerve receptors can be defined as biological structures capable of converting external/internal stimuli to electrical impulses.
Nerve receptors include different types of cellular structures located in eyes, skin, mouth, nose, etc.
In conclusion, the sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.
Learn more about nerve receptors here:
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Question 8-
(a) move out of the cell
(b) cell would shrink
(c) hypertonic
Queston 9-
(a) move into the cell
(b) cell would swell
(c) hypotonic
The amount of energy available from the organisms within a tropic level determine the carrying capacity of the next tropic level
Explanation:
Answer:
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Explanation: soy ingles amigo
