Lecture 27: Organ Nerve Root Values Flashcards
Heart
T1-T5
Caudal Esophagus
T5-T6
Stomach
T6-T10
Small Intestine
T9-T10
Appendix
T10 (peri-umbilical)
Large intestine to splenic flexure
T11-L1
Large Intestine to rectum
L1-L2
Liver/Gallbladder
T7-T9
Spleen
T6-T10
Pancreas
T6-T10
Kidney
T10-L1
Ureter
T11-L2
Testis
T10
What happens inside the IVF
Spinal nerve is born, called the radical. Created from the ventral root and dorsal root combining. Also where the radicular arteries enter the vertebral column to meet the spinal cord.
GSA function
Sensory information from the skin, as well as muscle sense, tendon sense and joint sense from deeper structures
What does the ANS innervate
Smooth muscle, glands,
Is the vagus parasympathetic or sympathetic?
parasympathetic
Where are there intermediolateral nuclei?
From T1-L2, but the sympathetic chain ganglion can exist in higher cervical areas or lower lumbar areas. There are only grey and white communicans T1-L2.
Do GVAs express pain?
No they do not. They express pain through GSAs through referred pain.
Can GSAs express reffered pain?
Yes they can to other somatics. Example is the phrenic nerve to the diaphragm, pain is felt in the C3, C4, C5 dermatomes.
Where is T10 dermatome
above the belly button
Where is T4 dermatome
nipple line
Where is T6 dermatome
Xyphoid process
late pain vs. reffered pain
referred pain is felt early on, in the nerve specific dermatome. Late pain is felt later, and is activiated through a nearby GSA nerve that is in the muscle/dermatome
What is the sympathetic highway?
The GVEs have specific root values, and then they descend down to their effectors through a two nerve system. GVAs travel back up from the effector back to the DRGs that have the same root values. They then activate GSAs in those DRGs, leading to the referred pain patterns.
Heart referred pain DRG
Found C1-T5
