Download e-book for kindle: Anatomy for Dental Students (4th Edition) by Martin Atkinson

By Martin Atkinson

ISBN-10: 0199234469

ISBN-13: 9780199234462

Anatomy for Dental scholars, Fourth variation, demonstrates and explains all of the anatomy wanted for a contemporary dentistry undergraduate direction. this article covers developmental anatomy, the thorax, the significant fearful process, and the top and neck with an emphasis at the sensible software of anatomical wisdom.

This re-creation has been broadly revised and up-to-date according to modern educating and dental perform. Over three hundred new complete colour diagrams map all of the anatomical areas that dental scholars want to know, whereas the vigorous and accesible textual content courses the reader's studying. all through medical program packing containers show how the shape and serve as of anatomy have outcomes for medical perform. Sidelines containers comprise extra descriptions for key anatomical structures.

This textual content is supported by way of a web source Centre with a number of selection questions, drag and drop determine workouts, and hyperlinks to key assets to aid readers to consolidate and expand their wisdom of anatomy.

Anatomy for Dental scholars brings jointly anatomical constitution, functionality, and their dating to medical perform, making it perfect for dental scholars.

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Additional info for Anatomy for Dental Students (4th Edition)

Example text

2B shows what happens when a neuron is stimulated. Na+ ion channels open and allow the excess Na+ ions to rush into the cell, changing the potential across the membrane from negative to positive. If enough Na+ ions get in to change the potential difference between the inside and outside of the cell to around +15 mV, the threshold potential is exceeded and the electrical activity will become self-generating along the dendrites and axons. This is called an action potential or depolarization (or ‘firing’ or nerve conduction).

The neurotransmitter will cross the synaptic cleft and attach to membrane receptors on the post-synaptic neuron, opening ligand-gated ion channels as they do so. If the ion channels thus opened allow Na+ ions in, then a wave of depolarization will be set in train as described above. 2). Thus some neurotransmitters will be stimulatory whereas others will be inhibitory, depending on the type of ion channels they open. Any post-synaptic neuron has synaptic connections with several presynaptic neurons so the final balance between inhibitory and stimulatory signals received determines whether a neuron fires or not.

The most common ligand-gated channels are opened by a chemical signal (for example, a hormone or some other intercellular messenger) binding to a receptor on the cell membrane that opens the channel. Receptors are usually very specific for particular ligands. 2 Synapses Axons terminate by forming specialized intercellular junctions with dendrites and/or the cell body of another neuron or with effector tissues such as muscles or glands. The junctions between neurons are called synapses and those between neurons and muscle are neuromuscular junctions.

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Anatomy for Dental Students (4th Edition) by Martin Atkinson

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