Based on your understanding of sympathetic nervous system function, explain why having preganglionic fibers making contact with many postganglionic fibers fits the role of the sympathetic nervous system
2007-02-15 13:39:36 · 2 answers · asked by audecastro 1 in Science & Mathematics ➔ Medicine
The ratio of preganglionic to postganglionic fibres is about 1:20. The more postganglionic fibres = more effect because 1 preganglionic fibre can effect 20 motor units. Because the sympathetic nervous system is mainly responsible for the fight or flight response it requires a large, quick, systemic reaction.
2007-02-15 13:47:26 · answer #1 · answered by Jenny M 2 · 1⤊ 0⤋
Every sympathetic ganglion is an endocrine gland in itself secreting Adrenalin, much like Adrenal medulla. Sympathetic ganglia are distributed all over the body and that`s how all reflex functions of heart and vital organs are performed.
2007-02-15 20:48:38 · answer #2 · answered by J.SWAMY I ఇ జ స్వామి 7 · 1⤊ 0⤋