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Types of Axons
Axons are of two types
In the case of myelinated axons the neurilemma is ensheathed by another covering, the myelin sheath, composed of complex lipoproteins. The terminal branches, dendrites, cell body (perikaryon) and the initial region of the axon (the axon hillock) are devoid of myelin sheath: Although the dendrites are relatively short, unsheathed, tapering, irregular in diameter, and branched in a wide array of patterns, the cell body cytoplasm extends into them. The dendrites receive synaptic endings over much of their surface and thus constitute the receptive surface of the neuron. They are like receiving antennae as a nerve cell receives messages along the dendrites but sends messages along the axon.
Point out some Guidelines for breast-feeding? 1) Follow demand feeding of the baby instead of a fixed schedule. 2) Initiate breast-feeding within 2 h after a normal delivery
Q. Photosynthesis is the most significant producer of molecular oxygen (O2) on our planet. From which molecule do oxygen atoms liberated by photosynthesis come and from which other
What are the chemical elements that form most of living biological matter? The elements are:- a) oxygen (O), b) carbon (C), c) hydrogen (H) and d) Nitrogen (N).
Can the amount of available energy in a given trophic level be larger than the available energy in inferior trophic levels? What does that condition means to the conformation of th
What is the role of radiographic evaluation in implant treatment? Radiographic examination is very different with implants than with teeth. Radiographs are frequently used in i
As coenzymes participate in a variety of functions, they can be classified broadly into two groups: i) Hydrogen transferring coenzymes, and ii) Group transferring coenzym
Define Proteins as biological buffers? Proteins have the ability to accept or donate hydrogen ions and by doing so they serve as biological buffers. In blood, there are three i
Q. What are the structures that form the external ear? What is its function? The internal ear comprises the auricle or pinna and the auditory canal its function is to conduct t
Food chain is the simplest representation of energy flow in the community. At the base is energy stored in the plants, which are eaten by the small organisms, which in turn are ea
Explain Metabolism of Iron? In this sub-section, we will study how body gets its iron supply, how iron is transported and utilized by the various tissues and how iron balance i
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