Neuroscience Week 5: Autonomic Nervous System Functional Anatomy

Question 1

Major divisions of the autonomic nervous system

Answer 1

• Sympathetic
• Parasympathetic
• Enteric

Question 2

Sympathetic Nervous System Target Organ Systems

Answer 2

Question 3

Answer 3

• so sympathetics and parasympathetics there are always 2 neurons and a ganglion

Question 4

Ganglion Definition

Answer 4

Collection of nerve cell bodies outside the CNS

Question 5

Basic anatomy of Sympathetics

Answer 5

Question 6

identify intermedial lateral cell column

Answer 6

Question 7

Where are the cell bodies of the sympathetic preganglionic neurons located?

Answer 7

in the intermediolateral cell column (IML)

Question 8

What lies in the intermediolateral cell column?

Answer 8

Cell bodies of sympathetic preganglionic neurons

Question 9

Where are the Sympathetic Spinal Origins by # of vertebrae

Answer 9

T1 - L2 (Thoraco-Lumbar origins)

Question 10

Length of Sympathetic Nervous system preganglionic and postganglionic neurons

Answer 10

• Short preganglionic
• Long postganglionic

Question 11

How does the sympathetic nervous system control the entire body?

Answer 11

The Sympathetic chain or trunk

Question 12

The Sympathetic chain or trunk

Answer 12

a collection of ganglia for sympathetics because there is not enough room within the spinal cord for the postganglionics which go out to individual organs

Question 13

The Sympathetic chain or trunk pictures

Answer 13

Question 14

Sympathetic Routes to different targets

4 listed

• Body wall and limbs
• Head
• Thoracic viscera
• Abdominal viscera

Answer 14

Question 15

Sympathetic innervation of extremities

Answer 15

Question 16

Identify

Answer 16

Question 17

How do preganglionic nerves go to the sympathetic chain

Answer 17

White Ramus communicans

Question 18

How do postganglionic nerves go back to the spinal nerve?

Answer 18

Gray ramus communicans

Question 19

Gray Rami Communicans properties, location, and function

Answer 19

Question 20

White Rami Communicans properties, location, and function

Answer 20

Question 21

Autonomic innervation of the eye

Answer 21

Starts in IML → travels up the sympathetic chain → to the superior cervical ganglion → follow the branches of the carotid artery to the eye

Question 22

Identify

Answer 22

Question 23

Sympathetic innervation of thoracic viscera

Answer 23

Question 24

Sympathetic innervation of the head: effectors

4 listed

Answer 24

• Eyes
• Blood vessels
• Sweating
• Pilomotion

Question 25

Identify

Answer 25

Question 26

Sympathetically innervated thoracic viscera

Answer 26

Heart Bronchioles Larynx Trachea Lungs

Question 27

Sympathetic innervation of the head: Preganglionics

Answer 27

Question 28

Sympathetic innervation of the head: preganglionic synapse

Answer 28

Question 29

Thoracic viscera sympathetic nerves AKA

Answer 29

Splanchnic nerves (cardiopulmonary splanchnic nerves)

Question 30

Sympathetic Postganglionics are _myelinated/unmyelinated_

Answer 30

unmyelinated

Question 31

Sympathetic Preganglionics are _myelinated/unmyelinated_

Answer 31

Myelinated

Question 32

Example of sympathetic pathways to abdominal viscera

Answer 32

IML → dont make connections in the sympathetic chain but pass through to the prevertebral ganglion (celiac) and synapse of a postganglionic neuron → gi targets

Question 33

Abdominal viscera ganglia

Answer 33

Question 34

prevertebral ganglia AKA

Answer 34

preaortic ganglia

Question 35

Sympathetic innervation of the abdominal viscera

Answer 35

Question 36

Question 1

Answer 36

D sympathetic dilation of the pupil

Question 37

prevertebral ganglia of GI tract

Answer 37

aorticorenal does not go to the gut so it follows aorticorenal

Question 38

oldest part of the sympathetic nervous system

Answer 38

Adrenal glands through epinephrine

Question 39

The adrenal glands and sympathetic nervous system

Answer 39

Chromaffin cells; basically specialized cells of the sympathetic ganglia through which epinephrine and bloodstream are the effectors, this acts like a ganglion

Question 40

Para vs prevertebral ganglia

Answer 40

Question 41

Study guide

Answer 41

Question 42

Sympathetic innervation of the head: postganglionics

Answer 42

Question 43

Chromaffin cells are analogous to

Answer 43

postganglionic neurons whose effector is epinephrine