Nervioso Flashcards
Discrete, granular clumps of rough endoplasmic reticulum (RER) and ribosomes scattered throughout nerve cell bodies and dendrites. Because ribosomes contain negatively charged RNA, Nissl bodies are basophilic.
Cuerpos de Nissl
Morfología de neuronas motoras
Multipolares
Morfología de neuronas sensoriales
Pseudounipolares
They are characterized as having a single axon that emerges from the soma and divides into two branches: one that extends from the sensory receptors to the soma and another that transmits information from the soma to the central nervous system (CNS).
Pseudounipolar - general sensory neurons
*These neurons lack dendrites. General senses refer to senses that do not have a specific organ devoted to them, such as pain, temperature, touch, pressure, vibration, and proprioception.
Small cells that form a circumferential ring around nerve somas. They function to provide support for neurons and assist in regulating the external chemical environment.
Satellite cells
In the peripheral nervous system (PNS), the plasma membrane is derived from … whereas in the central nervous system (CNS), the plasma membrane is derived from …
Schwann cells, oligodendrocytes.
What is myelin sheath made of?
It consists of densely packed layers of plasma membrane, a lipid bilayer, that contains transmembrane proteins and the concentric layers are densely packed
Stain used to visualiza individual axons in a peripheral nerve
azul de toluidina
Función de la célula de Schwann
Permite que los impulsos electricos viajen rápidamente a través de una célula nerviosa