Neurons, Nerve Fibers and Peripheral Nerves,practice

Neurons, Nerve Fibers and Peripheral Nerves
Curriculum:Phase 2/Semester2/TOB /Session 11/practical histology
2017/2018
Lecturer :Dr. RajaaAliAl-Taee
Msc. PhD. Histology G.mail:dr.rajaaali@gmail.com
Hammurabi Medical Collage / Babylon University
Nervoussystem is divided into two parts:
1-The Central Nervous System (CNS) which consists of the brainand the spinalcordwhich
are composed of neurones (nerve cells) and supporting neuroglialcells.
2-The Peripheral Nervous System (PNC)which consists of Peripheral Nerve and ganglia.
Nervous tissue consists of two groups of cell types:1-Nerve cells (Neurons)2-Neuroglia.Structures of neuron
1-dendrite 2-The cell body (perikaryon)
3-The axon
Nervous tissue consists of two groups of cell types:
1-Nerve cells (Neurons)2-Neuroglia.Structures of neuron
1-dendrite2-The cell body (perikaryon)3-The axon
Morphological classification of neurons
three main types of neurons, according to their number of processes.
Based on number of processes found on cell body
1.multipolar= several dendrites & one axon
most common cell type
2.bipolarneurons = one main dendrite & one axon
found in retina, inner ear & olfactory
3.unipolarneurons = one process only(develops from a bipolar)
are always sensory neurons