Disease or infarction of neurological tissue causes it to be repaired by –
**Core Concept**
The process of repairing damaged neurological tissue involves complex cellular and molecular mechanisms, including the activation of various cell types and the release of growth factors. This repair process is crucial for maintaining tissue integrity and function in the central nervous system.
**Why the Correct Answer is Right**
The correct answer is Astrocytes. Astrocytes play a vital role in the repair of damaged neurological tissue by activating various cellular processes, including the release of growth factors such as brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF). These growth factors promote the survival and differentiation of new neurons and oligodendrocytes, which are essential for the repair and regeneration of damaged tissue.
**Option A:** Microglia. Microglia are the resident immune cells of the central nervous system and play a key role in the inflammatory response to injury. While microglia are involved in the repair process, they are not the primary cell type responsible for tissue repair.
**Option B:** Oligodendrocytes. Oligodendrocytes are responsible for myelinating neurons in the central nervous system, but they are not directly involved in the repair of damaged tissue.
**Option C:** Neurons. Neurons are the primary functional units of the central nervous system, but they are not capable of repairing damaged tissue on their own.
**Clinical Pearl / High-Yield Fact**
Astrocytes are the most abundant glial cells in the central nervous system and play a crucial role in maintaining the blood-brain barrier, regulating neurotransmitter levels, and facilitating the repair of damaged tissue.
**Correct Answer:** C. Astrocytes. Astrocytes are the primary cell type responsible for the repair of damaged neurological tissue.