Nervous system

Question 1

Somatic

Answer 1

Pertaining to body wall structures

Question 2

Visceral

Answer 2

Pertaining to organs and other structures found in the body cavities

Question 3

Tract

Answer 3

Bundle of axons in the CNS

Question 4

Ganglion

Answer 4

Collection of neurons located outside of the CNS

Question 5

Somatic division

Answer 5

Voluntary (Motor and Sensory)

Question 6

List steps of Somatic Motor Pathway

Answer 6

1) Originate Anterior Horn 2) Travel Anterior Root 3) At Spinal nerve; split to Posterior ramus (intrinsic back muscles) or Anterior ramus

Question 7

List steps of Somatic Sensory Pathway

Answer 7

1) Originate in body travel through either posterior ramus or anterior ramus 2) Gather in Posterior root ganglion 3) Travel along posterior root into posterior horn

Question 8

Dermatome

Answer 8

Strips of skin innervated by single spinal nerve

Question 9

Myotome

Answer 9

Muscle segments innervated by single spinal nerve

Question 10

Identify this pathway

Answer 10

Sympathetic Innervation to Body Wall

Question 11

Identify black arrow

Answer 11

White ramus communicans

Question 12

Identify red arrow

Answer 12

Gray Ramus Communications

Question 13

What nerve travels from paravertebral ganglion to visceral structures of thorax in sympathetic innervation?

Answer 13

Cardiopulmonary Splanchnic N

Question 14

Where does sympathetic innervation initiate?

Answer 14

Lateral horn (IML Column)

Question 15

List sympathetic innervation pattern for head/neck region

Answer 15

1. Lateral horn
2. Synapse in paravertebral ganglion
3. Ascend sympathetic chain
4. Hitchhike on other nerves and/or blood vessels headed to target region

Question 16

Does sympathetic innervation to thorax area synapse in paravertebral ganglia?

Answer 16

Yes; then travel on cardiopulmonary splanchnic nerves

Question 17

Does sympathetic innervation to visceral structures in abdomen/pelvis area synpase in paravertebral ganglion?

Answer 17

No; it passes through paravertebral ganglion and travels on abdominopelvic splanchnic nerves

Question 18

Where does sympathetic innervation to visceral structures in abdomen/pelvis area synapse?

Answer 18

Prevertebral ganglion

Question 19

Sympathetic innervation to visceral structures in abdomen/pelvis travel on what nerves?

Answer 19

abdominopelvic nerves

Question 20

Where do prevertebral ganglion lie in relationship to vertebral column?

Answer 20

Anterior to vertebral column

Question 21

In sympathetic innervation to visceral structures in abdomen/pelvis; post synaptic nerve fibers will follow what to target organs? What is this called?

Answer 21

Arteries; periarterial plexus

Question 22

Where do parasympathetic pathways to head/neck originate?

Answer 22

Cranial Nerves 3, 7, 9, 10

Question 23

Where do parasympathetic pathways to thorax/abdomen originate?

Answer 23

Cranial Nerve 10 (vagus nerve)

Question 24

Where does parasympathetic innervation to Hindgut, pelvis originate?

Answer 24

Splanchnic nerves from S2-S4

Question 25

Identify this type of innervation

Answer 25

Parasympathetic pathway to hindgut; pelvis

Question 26

Where are lateral horns located in the spine?

Answer 26

T1-L2

Question 27

Identify

Answer 27

Pelvic splanchnic nerves: branching from anterior rami

Question 28

Describe pathway of Visceral Sensory (afferent) Innervation?

Answer 28

1. Single neuron pathway
2. impulse follow sympathetic pathways in reverse order to that organ