Plexuses

Question 1

Cervical Plexus

Answer 1

Ventral Rami of C1-C5

Sensory Nerves

• Greater Auricular Nerve
• Transverse Cervical Nerve
• Lesser Occipital Nerve
• Supraclavicular Nerve

Motor Nerves

• Phrenic Nerve
• Ansa Cervicalis

Question 2

Brachial Plexus

Answer 2

Ventral Rami of C5-T1

• 3 Trunks (Superior, Middle, Inferior)
• 6 Divisions (Superior, Middle, and Inferior each have an Anterior and Posterior)
• 3 Cords (Lateral, Posterior, Medial)
• 5 Terminal Nerves
• Musculocutaneous
• Axillary
• Radial
• Median
• Ulnar

Question 3

Lumbar Plexus

Answer 3

Ventral Rami of L1-L4

• Illioinguinal
• Genitofemoral
• Lateral Femoral Cutaneous
• Obturator
• Femoral
• Lumbosacral Trunk

Question 4

Sacral Plexus

Answer 4

Ventral Rami of S1-S4

• Superior Gluteal Nerve
• Inferior Gluteal Nerve
• Sciatic Nerve
• Posterior Femoral Cutaneous Nerve
• Pudenal Nerve
• Nerve to the quadratus femoris
• Nerve to the Obturator internus