Autonomic Nervous System (ANS)

Autonomic Nervous System Dr. Hussam Al-Humadi
1
Autonomic Nervous System (ANS)
Major portion of the NS (involuntary, unconscious, autonomic portion of
the nervous system.
General Organization:
1- Central ANS (hypothalamus).
2- Peripheral ANS, which consists of :
a- Sympathetic (SNS).
b- Parasympathetic (PSNS).
A-Sympathetic Nervous System (SNS)

? Spinal Roots of Origin: (Thoraco-lumber)
The sympath. preganglionic fibers originate in the thoracic (T1-
T12) & Lumber (L1-L5) segments of the spinal cord.
? Location of the ganglia:

Autonomic Nervous System Dr. Hussam Al-Humadi
1
Autonomic Nervous System (ANS)
Major portion of the NS (involuntary, unconscious, autonomic portion of
the nervous system.
General Organization:
1- Central ANS (hypothalamus).
2- Peripheral ANS, which consists of :
a- Sympathetic (SNS).
b- Parasympathetic (PSNS).
A-Sympathetic Nervous System (SNS)

? Spinal Roots of Origin: (Thoraco-lumber)
The sympath. preganglionic fibers originate in the thoracic (T1-
T12) & Lumber (L1-L5) segments of the spinal cord.
? Location of the ganglia:
Autonomic Nervous System Dr. Hussam Al-Humadi
1
Autonomic Nervous System (ANS)
Major portion of the NS (involuntary, unconscious, autonomic portion of
the nervous system.
General Organization:
1- Central ANS (hypothalamus).
2- Peripheral ANS, which consists of :
a- Sympathetic (SNS).
b- Parasympathetic (PSNS).
A-Sympathetic Nervous System (SNS)

? Spinal Roots of Origin: (Thoraco-lumber)
The sympath. preganglionic fibers originate in the thoracic (T1-
T12) & Lumber (L1-L5) segments of the spinal cord.
? Location of the ganglia: