HumanNervesSpinalTrunk

Human Spinal Trunk Nerves

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This page is intended to list thoracic spinal cord nerves of biological human, which connect mind to human limbs and visceral organs.

Coverage verified by:

• http://medical-dictionary.thefreedictionary.com/nerve (name base)
• http://www.oluwoleogunranti.com/course/course1/nerves (MA reference)

CERVICAL, THORACIC, LUMBAR AND SACRAL - TRUNK MOTOR NERVES

(generated)

motor nuclei/ganglia:

• Posteromedial Nucleus,LPC.SC.VH.PM; NERVES={first intercostal nerve; motor nerves of back, flexors; subcostal nerve, motor; thoracic and thoracicoabdominal intercostal nerves, flexors; thoracic intercostal nerves, extensors}
• Ventromedial Nucleus,LPC.SC.VH.VM; NERVES={motor nerves of back, extensors; thoracicoabdominal intercostal nerves, extensors}

sensory nuclei/ganglia:

nerves:

• first intercostal nerve (small branch); DISTRIBUTION={1st rib}; MODALITY={flexor motor}; FIBERS={GSE:Posteromedial Nucleus,LPC.SC.VH.PM -> Trunk,TARGET.TEA.TRUNK}
  • 
• posterior ramus, motor; MODALITY={flexor motor, extensor motor}
  • 
  • motor nerves of back, extensors; DISTRIBUTION={longissimus muscle, multifidus muscle, semispinalis, levatores costarum muscles, interspinales muscles, intertransversarii muscle}; MODALITY={extensor motor}; MUSCLES={Trunk - interspinales muscles - aid in extension and rotation of vertebral column; Trunk - intertransversarii muscle - aid in lateral flexion of vertebral column; acting bilaterally, stabilize vertebral column; Trunk - levatores costarum muscles - elevate ribs, assisting respiration; assist with lateral flexion of vertebral column; Trunk - longissimus muscle - extends spine; Trunk - multifidus muscle - stabilizes vertebrae in local movements of vertebral column; Trunk - semispinalis cervicis - extends and rotates the head to the contralateral side and also extends the ribs; Trunk - semispinalis dorsi (thoracis) - extends vertebral column}; FIBERS={GSE:Ventromedial Nucleus,LPC.SC.VH.VM -> Trunk,TARGET.TEA.TRUNK}
  • motor nerves of back, flexors; DISTRIBUTION={iliocostalis muscle, spinalis muscle, rotatores muscles}; MODALITY={flexor motor}; MUSCLES={Trunk - iliocostalis muscle - extends and lateral flexes spine; Trunk - rotatores muscles - facilitates the unilateral rotation and bilateral extension of the spine; Trunk - spinalis muscle - lateral flexion of spine}; FIBERS={GSE:Posteromedial Nucleus,LPC.SC.VH.PM -> Trunk,TARGET.TEA.TRUNK}
• subcostal nerve, motor (MA:SUBCOSTAL NERVE); MODALITY={flexor motor}; MUSCLES={Trunk - abdominal internal oblique muscle - compresses abdomen and rotates vertebral column; Trunk - pyramidalis muscle - tensing the linea alba}; FIBERS={GSE:Posteromedial Nucleus,LPC.SC.VH.PM -> Trunk,TARGET.TEA.TRUNK}
  • 
• thoracic and abdominal intercostal nerves; MODALITY={flexor motor, extensor motor}
  • 
  • thoracic and thoracicoabdominal intercostal nerves, flexors; DISTRIBUTION={rectus abdominis; external intercostal muscles; serratus posterior superior muscle}; MODALITY={flexor motor}; MUSCLES={Hand - sternalis muscle - protract and stabilize scapula, assists in upward rotation; Trunk - abdominal external oblique muscle - rotates torso; Trunk - external intercostal muscles - aid in quiet and forced inhalation; Trunk - rectus abdominis muscle - flexion of trunk/lumbar vertebrae; Trunk - serratus posterior superior muscle - elevate the ribs which aids in inspiration}; FIBERS={GSE:Posteromedial Nucleus,LPC.SC.VH.PM -> Trunk,TARGET.TEA.TRUNK}
    • 
  • thoracic intercostal nerves, extensors; DISTRIBUTION={semispinalis dorsi (thoracis); transversus thoracis muscle; subcostalis muscle}; MODALITY={extensor motor}; FIBERS={GSE:Posteromedial Nucleus,LPC.SC.VH.PM -> Trunk,TARGET.TEA.TRUNK}
  • thoracicoabdominal intercostal nerves, extensors; ORIGIN={T7-T11}; DISTRIBUTION={internal intercostal muscles, serratus posterior inferior}; MODALITY={extensor motor}; MUSCLES={Trunk - internal intercostal muscles - aid in forced expiration; Trunk - serratus posterior inferior muscle - depress the lower ribs, aiding in expiration; Trunk - subcostalis muscle - synergist in aiding the internal intercostal muscles with forced exhalation; Trunk - transversus abdominis muscle - compress the ribs and viscera, providing thoracic and pelvic stability; Trunk - transversus thoracis muscle - depresses the ribs; aids in exertional expiration by decreasing the transverse diameter of the thoracic cage}; FIBERS={GSE:Ventromedial Nucleus,LPC.SC.VH.VM -> Trunk,TARGET.TEA.TRUNK}