202 - Autonomic Nervous System (pt 1&2)

ANS

Regulates processes normally beyond voluntary control or beneath consciousness, Controls visceral functions

PNS

sensory and motor actions are divisions of which main nervous system?

CNS

information processing occurs in which nervous system?

SNS

this division of the PNS gives motor informations to skeletal muscles:

ANS

this division of the PNS gives motor information to glands and smooth and cardiac muscles:

somatic sensory

receives touch, pain, temperature, proprioception from body

somatic motor

sends voluntary and reflexive motor to skeletal muscle

visceral sensory

receives visceral stimuli

visceral motor

sends involuntary and reflexive motor to smooth muscle, cardiac muscle, and glands

CNS

the brain is part of the:

CNS

the spinal cord is part of the:

PNS

the cranial nerves are part of the:

PNS

the spinal nerves are part of the:

General Somatic Afferent

this type of nerve fiber sends sensations from body to CNS

dorsal root ganglion

in a General Somatic Afferent nerve fiber, the cell body is located in the:

General Somatic Efferent

this type of nerve fiber sends info from the CNS to skeletal muscle

ventral horn

in a General Somatic Efferent nerve fiber, the cell body is located in the:

General Visceral Afferent

this type of nerve fiber sends visceral stimuli from body to CNS

dorsal root ganglion

in a General Visceral Afferent nerve fiber, the cell body is located in the:

General Visceral Efferent

this type of nerve fiber sends info from the CNS to smooth and cardiac muscle, glands

intermediolateral cell column

in a General Visceral Efferent nerve fiber, the pre-ganglionic cell body is located in the:

ANS

which division of the PNS has their afferent and efferent neurons travel through autonomic ganglia before reaching their destination?

autonomic ganglia

in a General Visceral Efferent nerve fiber, the post-ganglionic cell body is located in the:

dorsal horn

identify the structure

ventral horn

identify the structure

ventral roots

identify the structure

dorsal roots

identify the structure

dorsal root ganglion

identify the structure

spinal nerve

identify the structure

dorsal primary ramus

identify the structure

ventral primary ramus

identify the structure

sympathetic chain

identify the structure

sympathetic ganglion

identify the structure

SNS

•1 motor neuron from CNS to skeletal muscle

•Cell bodies located in ventral horn of spinal cord or in brainstem nuclei

ANS

•2 motor neuron chain

•Preganglionic cell bodies located in intermediolateral cell column of spinal cord or in brainstem nucei

sympathetic division

Coordinates and directs the body's response to stressful or frightening situations
Three "E's" Emergency! Excitement Exercise
"Fight or Flight"

parasympathetic division

Conserves energy
Restores nutrients
"Rest and Digest"

sympathetic division

Dilates pupils

sympathetic division

Increases heart rate

sympathetic division

Bronchodilates

sympathetic division

Vasoconstricts to skin and GI

sympathetic division

Vasodilates coronary arteries and skeletal muscle arteries

sympathetic division

Activates arrector pili and sweat glands

sympathetic division

Secretion of epinephrine and norepinephrine

sympathetic division

Stimulates breakdown of molecules for fuel

parasympathetic division

Constricts pupils, accommodation

parasympathetic division

Decreases heart rate

parasympathetic division

Bronchoconstricts

parasympathetic division

Stimulates secretion of tears and saliva

parasympathetic division

Increases GI motility

parasympathetic division

Vasodilates to GI

parasympathetic division

know as the cranio-sacral division:

sympathetic division

know as the thoraco-lumbar division:

parasympathetic division

which sympathetic system nerves have long pre-ganglionic and short post-ganglionic axons?

sympathetic division

which sympathetic system nerves have long post-ganglionic and short pre-ganglionic axons?

grey rami communicantes

sympathetic efferent fibers that target the effectors at the same level enter the sympathetic chain via white communicates, synapse, and exit via:

ascending sympathetic chain

sympathetic efferent fibers that target the effectors above the thoraco-lumbar roots will enter the sympathetic chain via white communicates, synapse, and exit via:

descending sympathetic chain

sympathetic efferent fibers that target the effectors below the thoraco-lumbar roots will enter the sympathetic chain via white communicates, synapse, and exit via:

ascend within sympathetic chain AND Synapse at same level

sympathetic efferent fibers that target the effectors in the thorax (ie. heart and lungs) will enter the sympathetic chain via white communicates, synapse, and:

grey rami communicantes

sympathetic efferent fibers exit the sympathetic chain via the:

T1-L2

what spinal segments does the sympathetic nervous system run through?

cranial nerves
S2-S4

what spinal segments does the parasympathetic nervous system run through?

sympathetic chain

How do sympathetic fibers get to the effectors in the
head, trunk wall, and extremities?

T1-T4/5

what spinal segments do the cardiopulmonary splanchnic nerves root from?

cardiopulmonary splanchnic nerves

these carry postganglionic sympathetic fibers to
the heart, lungs, and esophagus

effectors in the abdomen and pelvis

sympathetic nerves traveling to this region pass through the sympathetic chain without synapse:

T5-T9

the greater splanchnic nerves originate from spinal nerve levels:

abdominopelvic splanchnic nerves

what are the preganglionic fibers of T5-L1/2 called?

T10-T11

the lesser splanchnic nerves originate from spinal nerve levels:

T12

the least splanchnic nerve originate from spinal nerve level:

L1-L2

the lumbar and sacral splanchnic nerves originate from spinal nerve level:

prevertebral ganglia

Abdominopelvic splanchnic nerves carry preganglionic sympathetic fibers to ____________ in the abdomen or pelvis

postganglionic fibers

cardiopulmonary splanchnic nerves carry what type of sympathetic fibers?

preganglionic fibers

abdominopelvic splanchnic nerves carry what type of sympathetic fibers?

prevertebral ganglia

these structures hold postganglionic sympathetic cell bodies

celiac ganglion

identify the structure #2

aorticorenal ganglion

identify the structure #4

superior mesenteric ganglion

identify the structure #3

inferior mesenteric ganglion

identify the structure #7

adrenal gland

which organ is the only one that has sympathetic efferent fibers that do NOT synapse at the prevertebral ganglia, but go straight through them to the effector organ?

prevertebral ganglia

where are post-ganglionic cell bodies of abdominopelvic splanchnic nerves located?

ventral horn of spinal cord

where are pre-ganglionic cell bodies of abdominopelvic splanchnic nerves located?

periarterial plexuses

Postganglionic fibers follow ________ to target organ

Oculomotor (CN III)
Facial (CN VII)
Glossopharyngeal (CN IX)
Vagus (CN X)

Preganglionic parasympathetic fibers exit brainstem via what 4 cranial nerves:

sympathetic division

most general viscaral afferent pain sensations will use which division to get back to the CNS?

parasympathetic division

Pain from viscera below "pelvic pain line" will use which division to get back to the CNS?

General Visceral Afferent

•Carry sensory information from viscera to CNS
•Usually does not reach conscious level
•Sensation that reaches conscious level = poorly localized pain, cramps

sympathetic division

Pain from most of the viscera, Ie: Ischemia or noxious stimuli in the heart, will take which autonomic division back to the CNS?

parasympathetic division

Pain from viscera below "pelvic pain line". Ie: Birth canal, will take which autonomic division back to the CNS?

T1-T4/5

pain in the heart is most often referred to what dermatome?

greater splanchnic nn.

the organs of the foregut at innervated by what splanchnic division?

lesser splanchnic nn.

the organs of the midgut at innervated by what splanchnic division?

lumbar splanchnic nn.

the organs of the hindgut at innervated by what splanchnic division?

least splanchnic nn.

the kidneys and adrenal glands are innervated by what splanchnic division?

vagus n.

parasympathetic innervation for the foregut is done by the:

vagus n.

parasympathetic innervation for the midgut is done by the:

pelvic splanchnic nerves

parasympathetic innervation for the hindgut is done by the:

pelvic splanchnic nerves

parasympathetic innervation for the pelvic structures is done by the: