Tissues & Organs
Tissues & Organs
Neuron Structure
Cell Body/Soma
Nucleus | ‘owl’s eye’ – large, spherical, central and pale stained nucleus, well defined nucleolus
Dendrites
Key ID | branching pattern
Axon
Abundance of neurofilaments and microtubules
Connective Tissue
Endoneurium | loose connective tissue (reticular tissue)
Perineurium | dense irregular collagenous connective tissue
Epineurium | dense irregular collagenous connective tissue
Neurons in a Dorsal Root Ganglion
Central Nervous System
Spinal Cord
Key ID | central H-shaped area of grey matter (cell bodies) surrounded by white matter (myelinated fibres)
Dorsal root ganglion
Sensory Cell Bodies | globular, granular contents
Ventral root
Motor Cell Bodies | angular cells with many dendrites
Dorsal Root Ganglion
Spinal Cord
Nerve Bundle
Peripheral Nervous System
Nodes of Ranvier
Sreas where myelin covering is interrupted – junction of two Schwann cells
Motor End Plate
Synaptic contact with striated muscle fiber
Neuroglial cells | i.e. Schwann cells
Function | supporting cells for neurons
