An edited version of my Friday Evening Discouse given to the Royal Institution on 11 April 2008.
Abstract: The vagus nerves (cranial nerve X) connects our brainstem to the body, facilitating monitoring and control of many automatic functions; the vagus electrically links our gut, lungs and heart to the base of the brain in an evolutionarily-ancient circuit, similar between mammals and also seen in birds, reptiles, and amphibians. The vagus comprises a major part of the parasympathetic autonomic nervous system, contributing to the motor control of important physiological functions such as heart rate and gut motility. The vagus is also sensory, relaying protective visceral information leading to reflexes like cough and indication of lung volume. The vagus has been described as a neural component of the immune reflex. By monitoring changes in the level of control exerted by the vagus, apparent as beat by beat changes of heart rate, it is possible to indirectly view the effect of pharmaceuticals and disease on brainstem function and neural processes underlying consciousness. The paired vagus nerves of humans have different functions, and stimulation of the left vagus has been shown to be a therapeutic treatment for epilepsy, and may modulate the perception of pain.
Teaching resource designed for Peninsula Medical School Students, who sit an exam called the AMK. This exam is an MCQ based exam and covers a number of clinical scenarios. This booklet specifically looks at the common causes of headaches.
This is a teaching resource that aids the student in memorisation of the Cranial Nerves, their anatomical path and function.
Additionally, it stimulates a clinical approach to the functions of the Cranial Nerves, with some 'not to be missed' signs.
The skull has numerous holes (foramina) through which various cranial nerves, arteries, veins and other structures pass. To aid learning of these important foramina, I have created this visual mnemonic.
http://www.handwrittentutorials.com - This video is the foundation for a series of 4 tutorials discussing the Dorsal Column - Medial Lemniscus Pathway, the Spinothalamic tract and the Corticospinal Tract. This video is an overview of the anatomy and organisation of the fasciculi involved and the major features of a spinal cord cross section. For more entirely FREE tutorials and accompanying PDFs visit http://www.handwrittentutorials.com