3A. Autonomic Nervous System (ANS) Flashcards
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
Parasympathetic Innervation - GVE LMN
Sacral Division Summary
- Preganglionic cell bodies in parasympathetic nuclei of lateral horn area of _________________ of the spinal cord
- Postganglionic cell bodies in either __________ ganglia or the ____________ ganglion
- sacral part
- terminal, pelvic
What is the role of the caudal hypothalamus in autonomic innervation?
it regulates the sympathetic division
Where would you find a preganglionic sympathetic cell body? in the:
thoracolumbar spinal cord
Which of the following is a named ganglion in the craniosacral division of autonomic innervation?
- lacrimal
- pterygopalatine
- rostral salibatory
pterygopalatine
Which is a characteristic feature of autonomic innervation?
Two neurons in the chain of innervation
Which is an example of paravertebral ganglia?
middle cervical
The rostral salivatory nucleus sends axons to synapse in which ganglion?
mandibular ganglion
The caudal salivatory nucleus sends axons to synapse in which ganglion?
otic ganglion
