Concept explainers
To review:
During the CNS development whether oligodendrocyte wrapping is essential for neuronal survival or not, and the targeting of synaptic partners is regulated by astroglial cells or not. Also explain whether microglia help “scult” the brain during the development.
Introduction:
Glia also known as glial cells or neuroglia. These are the non neuronal cells present in the central nervous system and peripheral nervous system. Three types of glial cells are present in the central nervous system, named as oligodendrocytes, astroglia and microglia. The transmission of information in neurons takes place via the electric impulses that travel from one part of the body to another along the axons. These cells are important in maintaining the homeostasis and protection of neurons.
Explanation of Solution
Oligodendrocytes are the important glial cells which provide the insulation to axons in central nervous system. This insulation process prevents the dispersal of the electric signal and also enhance the conduction towards the target cells. The wrapping process involves the generation of mylein sheath by the oligodendrocytes. This mylein sheath is 80% lipid and 20% protein. The presence of mylein sheath is essential for the proper functioning of nerve cells. This mylein wrapping also leads to the longevity in axons for decades.
Astroglial cells named because of their “star shape”. These cells are most abundant cells present in the brain and regulates the electrical impulse transmission within the brain. The crucial role of astrocytes, is maintainence of proper health and function of the nervous system by providing the
Microglia also play an important role as “immune cells” of the central nervous system. These cells perform their function by the process of phagocytosis and behave like the macrophages. Thus essential to maintain a good health of the CNS.
Thus it is concluded that oligodendrocyte wrapping is essential for neuronal survival, the targeting of synaptic partners is regulated by astroglial cells and microglia helps in “scult” the brain during the development.
Want to see more full solutions like this?
Chapter 14 Solutions
Developmental Biology
- TOPIC 2 OBJECTIVES • How do physical laws affect morphology? • What is meant by the term “efficiency”? • How can I make sure I’m using it correctly? • How does the size of an organism constrain its morphology? • How can we use physics to describe the function of vertebrate limbs? • How do vertebrates address the problems of movement through fluids? • How do we describe the strength of vertebrate tissues? • How do vertebrate tissues respond to stress? • How do physical constraints control the movement of materials between organisms and the environment?arrow_forwardNeed help with 17-20arrow_forward#33 and #38 Hi Tutor! Can you help me with this? Just make the answer simple and easy to comprehend. Thank you!arrow_forward
- Problem 9. Action potentials move along different axons at different speeds. Which of the following would have the fastest rate of conduction? small diameter unmyelinated axon large diameter myelinated axon small diameter myelinated axon large diameter unmyelinated axonarrow_forwardKEY QUESTIONS ONLYYY!!! I keep saying that… why are tutor answering and explain something else I don’t understand… It’s also wasting my questionsarrow_forwardQ1: Multiple sclerosis is a demyelinating disease affecting the central nervous system. What type of cell would be the most likely target of this disease? Why? What is the normal function of this type of cell and what would be the consequence?arrow_forward
- need help with Q4-Q5 Thanks!arrow_forward[questions 4-6] Volume of the sea Urchin egg is 5.2 x 105 µm3 . You fertilize the cells and take measurements of cellular dimensions at the four blastomere stage. Assume a perfect sphere. 5) What would you predict is the volume of each the sea urchin blastomeres? A) 1.3 x 105 µm3 B) 1.3 x 106 µm3 C) 1.24 x 104 µm3 D) 3.9 x 105 µm3 E) 25 µm F) None of thesearrow_forwardplease help 2 questions 1) how can you tell the difference between male and female fruit fly? 2) what mutation is sex linked?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningEssentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:Cengage