Domanda del libro di testo
In the CNS, a neuron typically receives information from other neurons at its:
(a) Axon
(b) Nissl bodies
(c) Dendrites
(d) Nucleus
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Ch. 12 Nervous Tissue
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089
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TOC.tableOfContents
- Ch. 1 An Introduction to Anatomy and Physiology26
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization30
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure36
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses16
- Ch. 18 The Endocrine System20
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation29
- Ch. 22 The Lymphatic System and Immunity31
- Ch. 23 The Respiratory System12
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes32
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance23
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089Non è quello che usi tu?Cambia libro di testo
Capitolo 12, Problema 4
Phagocytic cells in nervous tissue of the CNS are:
(a) Astrocytes
(b) Ependymal cells
(c) Oligodendrocytes
(d) Microglia.
Guida verificata passo dopo passo1
Understand the role of phagocytic cells in the central nervous system (CNS). Phagocytic cells are responsible for engulfing and digesting cellular debris, pathogens, and dead cells to maintain a healthy environment in the CNS.
Review the functions of each cell type listed: Astrocytes provide structural support and regulate the blood-brain barrier; Ependymal cells line the ventricles and help circulate cerebrospinal fluid; Oligodendrocytes produce myelin sheaths around CNS axons; Microglia act as the resident immune cells and perform phagocytosis.
Identify which cell type is specialized for phagocytosis. Since microglia are the immune cells of the CNS, they are the primary phagocytic cells responsible for removing waste and pathogens.
Confirm that microglia are derived from the same lineage as macrophages and have the ability to migrate and engulf harmful substances, distinguishing them from the other glial cells.
Conclude that the correct answer is microglia, as they are the phagocytic cells in nervous tissue of the CNS.
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Phagocytic Cells in the CNS
Phagocytic cells are specialized cells that engulf and digest cellular debris and pathogens. In the central nervous system (CNS), these cells help maintain homeostasis and protect neural tissue by removing harmful substances.
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CNS Development
Microglia
Microglia are the primary phagocytic cells of the CNS. They act as the brain's resident immune cells, constantly surveying the environment and responding to injury or infection by engulfing damaged cells and pathogens.
Other Glial Cells in the CNS
Astrocytes, ependymal cells, and oligodendrocytes are other types of glial cells in the CNS. While they support neurons in various ways, such as nutrient supply, forming myelin, or producing cerebrospinal fluid, they do not have phagocytic functions like microglia.
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07:02Other Epidermal Cells
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