3A. Autonomic Nervous System (ANS) Flashcards
(32 cards)
The _______________ innervation is actually a lower motor neuron system
autonomic
List the function of the Autonomic System:
- internal response to external stimuli
- involuntary reactions or responses
- response to stresses
The center control of the autonomic system is the __________________
Hypothalamus
Autonomic center control: Hypothalamus. (upper motor aspect)
- ____________________of the hypothalamus regulates Parasympathetic Division
- _____________________ of the hypothalamus regulates Sympathetic Division
- Rostral Portion
- Caudal Part
- cardiac muscle
- smooth muscle
- glandular tissue
These are the Target structures of:
Autonomic System
The autonomic system has _______ cell bodies (neurons), making a chain to the target
two
The somatic system, has ________ neuron, _____ cell body and that was located in the ventral gray horn of the spinal cord
one, one
Skeletal muscle is the Target structure for:
Somatic System
(T/F) On the somatic side, there are ganglia
False, no ganglia
The autonomic system has ganglia where a synapse occurs between our two cells.
- Prevertebral & paravertebral are associated with ___________________ division
- Terminal & named ganglia in reference to ________________________ system
- Sympathetic
- Parasympathetic system
On the sympathetic side of the system, that neurotransmitter is _______________ or _____________
Epinephrine
Adrenaline
What is the neurotransmitter that is released from postganglionic parasympathetic fibers?
Acetylcholine
PREganglionic sympathetic fibers are relatively ______________
POSTganglionic sympathetic fibers are relatively ______________
- Short
- Long
PREganglionic parasympathetic fibers are relatively ______________
POSTganglionic parasympathetic fibers are relatively ______________
- Long
- Short
Anatomy of the Sympathetic Nervous System - GVE LMN
Thoracolumbar Origin: ___________ of the spinal cord
lateral horn
Anatomy of the Sympathetic Nervous System - GVE LMN
- Sympathetic trunk Ganglia
- Cervical ganglia: cervicothoracic, middle, cranial
Paravertebral Ganglia
Anatomy of the Sympathetic Nervous System - GVE LMN
- Ganglia that are wrapped around the major aortic abdominal blood vessels
- celiac
- cranial mesenteric
- caudal mesenteric
- other
Prevertebral Ganglia
Peripheral sympathetic innervation to trunk and limb structures:
Peripheral target:
- _________________ glands
- arrector pili muscles that rise _____________
- _____________ smooth muscle
- Sweat
- hair
- Vascular
Examples of Sympathetic nerves:
- ______ganglionic: major, minor, lumbar splanchnic nerves
- pre
Examples of Sympathetic nerves:
- ______ganglionic: hypogastric, vertebral nerves
- post
Sympathetic innervation path to structure in the head:
- Preganglionic cell body in the Thoracolumbar part of the cord, forming the Lateral Horn
- ramus communicans
- Sympathetic trunk
- cervicothoracic ganglion
- Ansa Subclavia
- Middle cervical ganglion
- Vagosympathetic trunk
- Cranial cervical ganglion: POSTganglionic cell bodies
The connecting piece from the spinal cord to the sympathetic trunk
Ramus communicans (#2)
Craniosacral Origin:
- Brainstem: nuclei for certain cranial nerves
- Sacral Spinal Cord
Parasympathetic Innervation - GVE LMN
Parasympathetic Innervation - GVE LMN
Cranial Division Summary
- ________________ cell bodies in parasympathetic nuclei of CN III, VII, IX, X
- __________________ cell bodies in either named or terminal ganglia
- Preganglionic
- Postganglionic
