Nerve model 0167-00

bodyneuronfor teaching

Magnified more than 2500 times and fully three-dimensional, this neuron model is depicted in its natural setting. With the membranous envelope cut away, the cytological ultrastructure, organelles and inclusions within the cell body are depicted in contrasting colors. A section of the axon lifts off to expose the enveloping myelin sheath and neuro-lemma, as well as the Schwann cell that formed them. Dendrites of the neuron extend into the background, and synaptic vesicles carrying neurotransmitters can be seen via a cutaway view. 54 features are identified in an illustrated key. Nucleus Nucleolus Cytoplasm Lysosome Vesicles (emerge from Golgi & ER) Golgi apparatus of Golgi complex Mitochondria Endoplasmic reticulum (ER) Nissl body (rough ER has polyribosomes on it) Nerve bers Axon hillock (cone-shaped base of axon) Axon Dendrite Schwann cell cytoplasm Node of Ranvier Cytoplasm of axon (axoplasm) includes: neuro laments, microtubules, vesicles and mitochondria Axolemma Schwann cell nucleus Schmidt-Lanterman cleft Myelin sheath (wrapping portion with no cytoplasm)