2010 Alphabet Update. In 2010, a number of changes occurred to the Spanish alphabet, according to the Real Academia EspaÃ±ola. Prior to 2010, the Spanish alphabet had 29 letters. The Real Academia EspaÃ±ola had included ch and ll, as officially recognized letters. They do have distinct pronunciations, much like ch does in English.
The trigeminocardiac reflex (TCR) is a well-established brain stem reflex. Since it was first described by Schaller in 1999, the TCR has gone from being considered an episodic occurrence to becoming known as one of the most important phenomena ever seen in a number of different neurosurgical procedures, especially skull-base surgery. 1.; 2.; 3.; 4.
As discussed earlier, a reflex involves at least 2 or 3 neurons. The typical components of a reflex are shown in Figure 13.12. The reflex shown in this figure is called a 3-neuron reflex because it requires three types of neurons: a sensory, an interneuron, and a motor neuron.heir function, like that of stretch reflexes, is the coordination of muscles and body movements. The deep tendon reflex involves sensory neurons, interneurons, and motor neurons. The response reverses the original stimulus therefore causing relaxation of the muscle stimulated.