- Preface
- Introduction
- Part One Main Features of Structure and Function
- 1 Structure of the Neuron and Organization of Nervous Tissue
- 2 Glia
- 3 Neuronal Excitability
- 4 Synaptic Function
- 5 Neurotransmitters and Their Receptors
- 6 Parts of the Nervous System
- 7 The Coverings of the Brain and the Ventricular System
- 8 The Blood Supply of the CNS
- Part Two Development, Aging, and Plasticity
- 9 Prenatal and Postnatal Development
- 10 The Nervous System and Aging
- 11 Restitution of Function after Brain Damage
- Part Three Sensory Systems
- 12 Sensory Receptors in General
- 13 Peripheral Parts of the Somatosensory System
- 14 Central Parts of the Somatosensory System
- 15 Pain
- 16 The Visual System
- 17 The Auditory System
- 18 The Sense of Equilibrium
- 19 Olfaction and Taste
- Part Four Motor Systems
- 20 Motor Systems and Movements in General
- 21 The Peripheral Motor Neurons and Reflexes
- 22 The Motor Cortical Areas and Descending Pathways
- 23 The Basal Ganglia
- 24 The Cerebellum
- 25 Control of Eye Movements
- Part Five The Brain Stem and the Cranial Nerves
- 26 The Reticular Formation: Premotor Networks, Consciousness, and Sleep
- 27 The Cranial Nerves
- Part Six The Autonomic Nervous System
- 28 Visceral Efferent Neurons: The Sympathetic and Parasympathetic Divisions
- 29 Sensory Visceral Neurons and Visceral Reflexes
- 30 The Central Autonomic System: The Hypothalamus
- Part Seven Limbic Structures
- 31 The Amygdala and Other Neuronal Groups with Relation to Emotions
- 32 The Hippocampal Formation: Learning and Memory
- Part Eight The Cerebral Cortex
- 33 The Cerebral Cortex: Intrinsic Organization and Connections
- 34 Functions of the Neocortex
- Literature
- Index
(p. 20) Glia
- Chapter:
- (p. 20) Glia
- Author(s):
Per Brodal
- DOI:
- 10.1093/med/9780190228958.003.0002
Chapter 2 deals with glial cells, which make up the other main cellular component of nervous tissue. Glial cells are necessary for the proper functioning of the neurons. They are important for homeostasis by controlling extracellular ion concentrations and water balance. During prenatal development glial cells guide the growth and migration of the neurons. There are three main kinds: astrocytes that are mainly concerned with homeostatic tasks, oligodendroglial cells that produce myelin sheaths (insulating axons), and microglial cells that are activated by injury and help with reparative processes.
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- Preface
- Introduction
- Part One Main Features of Structure and Function
- 1 Structure of the Neuron and Organization of Nervous Tissue
- 2 Glia
- 3 Neuronal Excitability
- 4 Synaptic Function
- 5 Neurotransmitters and Their Receptors
- 6 Parts of the Nervous System
- 7 The Coverings of the Brain and the Ventricular System
- 8 The Blood Supply of the CNS
- Part Two Development, Aging, and Plasticity
- 9 Prenatal and Postnatal Development
- 10 The Nervous System and Aging
- 11 Restitution of Function after Brain Damage
- Part Three Sensory Systems
- 12 Sensory Receptors in General
- 13 Peripheral Parts of the Somatosensory System
- 14 Central Parts of the Somatosensory System
- 15 Pain
- 16 The Visual System
- 17 The Auditory System
- 18 The Sense of Equilibrium
- 19 Olfaction and Taste
- Part Four Motor Systems
- 20 Motor Systems and Movements in General
- 21 The Peripheral Motor Neurons and Reflexes
- 22 The Motor Cortical Areas and Descending Pathways
- 23 The Basal Ganglia
- 24 The Cerebellum
- 25 Control of Eye Movements
- Part Five The Brain Stem and the Cranial Nerves
- 26 The Reticular Formation: Premotor Networks, Consciousness, and Sleep
- 27 The Cranial Nerves
- Part Six The Autonomic Nervous System
- 28 Visceral Efferent Neurons: The Sympathetic and Parasympathetic Divisions
- 29 Sensory Visceral Neurons and Visceral Reflexes
- 30 The Central Autonomic System: The Hypothalamus
- Part Seven Limbic Structures
- 31 The Amygdala and Other Neuronal Groups with Relation to Emotions
- 32 The Hippocampal Formation: Learning and Memory
- Part Eight The Cerebral Cortex
- 33 The Cerebral Cortex: Intrinsic Organization and Connections
- 34 Functions of the Neocortex
- Literature
- Index
