Nerve Fiber Types, Interventions, and Presentations

Question 1

What fiber types are found in Intercostals and Subcostal Nerves?

Answer 1

· Somatic Motor
· Somatic Sensory
· Sympathetic

Question 2

What are the target tissues for the Intercostals and Subcostal Nerves?

Answer 2

·         Intercostal muscles
·         Thoracic Wall
·         Parietal Pleura
·         (7-12) Anterior Abdominal Wall
·         Peripherally - Diaphragm

Question 3

What are the symptoms/presentations for the Intercostals and Subcostal Nerves?

Answer 3

· Sensory deficits (Pain, Temp, Touch)
· Paralysis
· Lack of sweating

Question 4

What fiber types are found in the Phrenic Nerve?

Answer 4

· Somatic Motor (C3, C4, C5)

· Somatic Sensory (C3, C4, C5)

Question 5

What are the target tissues for the Phrenic Nerve?

Answer 5

· Parietal Pleura (Sensory)
· Fibrous Pericardium (Sensory)
· Parietal Layer of Serous Pericardium (Sensory)
· Diaphragm (Motor)

Question 6

What are the symptoms/presentations for the Phrenic Nerve?

Answer 6

· Difficulty w/inspiration

· Sensory deficits ANTERIOR to root of lung

Question 7

What fiber types are found in the Vagus Nerve?

Answer 7

· Parasympathetic

Question 8

What are the target tissues for the Vagus Nerve?

Answer 8

·         Lungs
·         Heart
·         Esophagus
·         Foregut
·         Midgut

Question 9

What are the symptoms/presentations for the Vagus Nerve?

Answer 9

· Bronchoconstriction
· Bradycardia
· Peristalsis and Secretion (in foregut)

Question 10

What fiber types are found in the Pulmonary Nerve?

Answer 10

· Sympathetic

Question 11

What are the target tissues for the Pulmonary Nerve?

Answer 11

· Lungs

Question 12

What are the symptoms/presentations for the Pulmonary Nerve?

Answer 12

· Bronchodilation

Question 13

What fiber types are found in the Cardiac Nerve?

Answer 13

· Sympathetic (Paravertibral Ganglion)

Question 14

What are the target tissues for the Cardiac Nerve?

Answer 14

· Heart

Question 15

What are the symptoms/presentations for the Cardiac Nerve?

Answer 15

· Tachycardia

Question 16

What fiber types are found in the Greater, Lesser and Least Thoracic Splanchnic Nerve (T5 - T12)?

Answer 16

· Sympathetic (T5-T9; Greater Thoracic Splanchnic Nerve only has Celiac Ganglion)
· Sympathetic (T10 - T12; Lesser and Least Thoracic Splanchnic Nerve have Celiac Ganglion or SMG)

Question 17

What are the target tissues for the Greater, lesser and Least Thoracic Splanchnic Nerve (T5 - T12)?

Answer 17

· Foregut (T5-T9; Greater Thoracic Splanchnic Nerve only)
· Midgut (T10 - T12; Lesser and Least Thoracic Splanchnic Nerve)

Question 18

What are the symptoms/presentations for the Greater, lesser and Least Thoracic Splanchnic Nerve (T5 - T12)?

Answer 18

· Inhibits Peristalsis and Secretion

Question 19

What fiber types are found in the Left and Right Recurrent Laryngeal Nerves?

Answer 19

· Somatic Motor

Question 20

What are the target tissues for the Left and Right Recurrent Laryngeal Nerves?

Answer 20

· Larynx
L: travels posterolateral to the ligamentum arteriosum
R: travels under the right subclavian

Question 21

What are the symptoms/presentations for the Left and Right Recurrent Laryngeal Nerves?

Answer 21

· Hoarseness of Throat: Caused by aneurysm of the aortic arch or enlargement of the lymph nodes

Question 22

What fiber types are found in the Pelvic Splanchnic Nerve?

Answer 22

· Parasympathetic (intermediate gray matter from S2-S4)

· “-P-elvic Splanchnic is the ONLY -P-arasympathetic Splanchnic”

Question 23

What are the target tissues for the Pelvic Splanchnic Nerve?

Answer 23

· Hindgut

Question 24

What are the symptoms/presentations for the Pelvic Splanchnic Nerve?

Answer 24

· Peristalsis and Secretion

Question 25

What fiber types are found in the Lumbar Splanchnic Nerve?

Answer 25

· Sympathetic

Question 26

What are the target tissues for the Lumbar Splanchnic Nerve?

Answer 26

· Hindgut

Question 27

What are the symptoms/presentations for the Lumbar Splanchnic Nerve?

Answer 27

· Inhibits Peristalsis and Secretion

Question 28

What is the REFERRED location of referred cardiac pain?

Answer 28

· T1 Dermatome

Question 29

What is the LOCALIZED location of referred cardiac pain?

Answer 29

· Cardiac Muscle

Question 30

What is the REFERRED location of referred gastric pain?

Answer 30

· Right and Left Upper Quadrant

Question 31

What is the REFERRED location of referred intestinal pain?

Answer 31

· Right and Left Lower Quadrant

Question 32

What is the REFERRED location of referred appendicular pain?

Answer 32

· T10 Dermatome | · Parietal Peritoneum

Question 33

What is the LOCALIZED location of referred appendicular pain?

Answer 33

· Lower Right Quadrant (When parietal peritoneum becomes inflamed)

Question 34

What is the location of the abdominal wall dermatomes?

Answer 34

· T7-T9: superior umbilicus · T10: Umbilicus · T11-L1: Inferior to umbilicus · L1: Inguinal fold

Question 35

What nerves innervate the abdominal wall?

Answer 35

Ventral Rami of... · T7-T11 (intercostal nn.) · T12 (subcostal nn.) · L1 (iliohypogastric, Ilioinguinal nn.) They innervate muscles SEGMENTALLY along their path

Question 36

Trace the pathway of the sympathetic nervous system to the BODY WALL.

Answer 36

Lateral horn --> Ventral root --> Spinal nerve --> Ventral ramus --> White ramus communicons --> Sympathetic trunk --> Para-vertebral ganglion (synaps) --> Grey ramus communicons --> Ventral or Dorsal rami --> Body Wall Targets (Blood vessels, arrector pilli muscles, sweat glands)

Question 37

Trace the pathway of the sympathetic nervous system to the THORACIC ORGANS.

Answer 37

Lateral horn --> Ventral root --> Spinal nerve --> Ventral ramus --> White ramus communicons --> Sympathetic trunk --> Para-vertebral ganglion (synaps) --> Cardiac/Pulmonary nerves --> Heart/Lungs

Question 38

Trace the pathway of the sympathetic nervous system to the ABDOMINAL ORGANS.

Answer 38

Lateral horn --> Ventral root --> Spinal nerve --> Ventral ramus --> White ramus communicons --> Sympathetic trunk --> Splanchnic nerve --> Pre-vertebral ganglion --> Abdominal/Pelvic organs

Question 39

How many cranial nerves does our body have?

Answer 39

12 pairs, exit brain via cranium foramina

Question 40

How many spinal nerve does our body have?

Answer 40

31 pairs; 8C, 12T, 5L, 5S, 1Co. Exit spinal cord via intervertebral foramina C1 exits between skull and C1 vertebra

Question 41

What type of fibers are somatic motor?

Answer 41

Efferent

Question 42

What type of fibers are somatic sensory?

Answer 42

Afferent

Question 43

How many neurons are involved in the Somatic, Autonomic, and Visceral nervous system?

Answer 43

1, 2, 1

Question 44

Trace the pathway of SOMATIC MOTOR.

Answer 44

Ventral horn --> Ventral root --> Spinal nerve --> Ventral or dorsal ramus

Question 45

Trace the pathway of SOMATIC SENSORY.

Answer 45

Ventral or Dorsal ramus --> Spinal nerve --> Dorsal root ganglion --> Dorsal root

Question 46

What type of neurons innervate the parietal peritoneum?

Answer 46

Somatic sensory

Question 47

What type of neurons innervate the visceral peritoneum?

Answer 47

Visceral sensory

Question 48

What fiber types are found in the Ilioingunal Nerve (L1)?

Answer 48

Somatic Sensory

Question 49

What is the target of the Ilioingunal Nerve (L1)?

Answer 49

Inguinal region (Labia Majora/ Scrotum)

Question 50

What fiber types are found in the Genetal brach of the Genitofemoral nerve?

Answer 50

Somatic motor Somatic sensory Sympathetic

Question 51

What is the target of the Genetal brach of the Genitofemoral nerve?

Answer 51

Motor: Cremaster muscle Sensory: Inguinal region (Labia Majora/ Scrotum) Sympathetic: Shrivel the dartos muscle