Ig
Wednesday, September 9, 2015
Monday, September 7, 2015
Viral vaccines
Live attenuated vaccine
Measle
Mump
Rubella
Polio sabin
VZ
Yellow fever
Killed
Rabies
Influenza
Polio salk
Hepatitis A
Subunit
Hepatitis
Influenza
Bacterial vaccine
Live attenuated
BCG
Killed/inactivated
Pertussive
Cholera
Thyphoid
Sub-unit
N.menigitidis
H.influenzae
S.pneumonia
Toxoid
Diphtheria
Tetanus
Chromaffin cells
CHROMAFFIN CELLS
These cells are derived embryologically from the neuro-ectoderm (neural crest).
During development, chromaffin cells are widely scattered within the embryo.
But in the adult, these can only be found in the adrenal medulla which is innervated by pre-ganglionic fibres from the thoracic spinal cord via the splanchnic nerves.
These fibres synapse directly with the chromaffin cells which are homologous to sympathetic post-ganglionic neurons and can generate action potential * ·
Sympathetic pre-ganglionic fibres are myelinated while post-ganglionic fibres are non-myelinated. All pre-ganglionic fibres secrete acetylcholine *
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