Lab 8: Neuron & Peripheral Nerves

Parts of the Neuron

• Dendrites

• Soma / Cell Body

• Axon Hillock

• Axon

• Telodendrion

• Axon Terminal / Synaptic End Bulb

• Synaptic Cleft

Identify

Dendrites

Identify

Cell Body / Soma

Parts of the Cell Body / Soma

• Nucleus

• Nissl Bodies

Identify

Nucleus

Identify

Nissl Bodies

Identify

Axon Hillock

Identify

Axon

Parts of the Axon

• Myelin Sheath (Schwann Cell)

• Node of Ranvier

Identify

Myelin Sheath / Schwann Cell

Identify

Node of Ranvier

Identify

Telodendrion

Identify

Axon Terminal / Synaptic End Bulb

Connective Tissue Sheaths of a Neuron

• Epineurium

• Perineurium

• Endoneurium

Identify

Epineurium

Identify

Perineurium

Identify

Endoneurium

Spinal Nerves

• 8 Cervical Nerves (CSN 1-8)

• 12 Thoracic Nerves (TSN 1-12)

• 5 Lumbar Nerves (LSN 1-5)

• 5 Sacral Nerves (SSN 1-5)

Plexuses

• Cervical Plexus

• Brachial Plexus

• Lumbar Plexus

• Sacral Plexus

Identify

Cervical Plexus

Nerves in the Cervical Plexus (that we need to know)

• Phrenic Nerve

Identify

Phrenic Nerve

Identify

Brachial Plexus

Cords in the Brachial Plexus

• Lateral Cord

• Medial Cord

• Posterior Cord

Identify

Lateral Cord

Identify

Medial Cord

Identify

Posterior Cord

Nerves in the Lateral Cord

• Musculocutaneous Nerve

• Median Nerve (1/2)

Nerves in the Medial Cord

• Median Nerve (1/2)

• Ulnar Nerve

Nerves in the Posterior Cord

• Axillary Nerve

• Radial Nerve

Identify

Musculocutaneous Nerve

Identify

Median Nerve

Identify

Ulnar Nerve

Identify

Axillary Nerve

Identify

Radial Nerve

Identify

Lumbar Plexus

Nerves in the Lumbar Plexus

• Obturator Nerve

• Femoral Nerve

Identify

Obturator Nerve

Identify

Femoral Nerve

Identify

Sacral Plexus

Nerves in the Sacral Plexus

• Gluteal Nerves

• Sciatic Nerves

Identify

Gluteal Nerves

Identify

Sciatic Nerves

Divisions of the Sciatic Nerve

• Tibial Nerve

• Common Fibular Nerve

Identify

Tibial Nerve

Identify

Common Fibular Nerve

Divisions of the Common Fibular Nerve

• Deep Fibular Nerve

• Superficial Fibular Nerve

Information: Phrenic Nerve

• Plexus: Cervical

• Muscle Innervation: Diaphragm

Information: Axillary Nerve

• Plexus: Brachial

• Muscle Innervation: Deltoid

Information: Musculocutaneous Nerve

• Plexus: Brachial

• Muscle Innervation: Biceps Brachii

Information: Radial Nerve

• Plexus: Brachial

• Muscle Innervation: All extensors of forearm

Information: Median Nerve

• Plexus: Brachial

• Muscle Innervation: Lateral flexors of forearm

Information: Ulnar Nerve

• Plexus: Brachial

• Muscle Innervation: Medial flexors of forearm

Information: Obturator Nerve

• Plexus: Lumbar

• Muscle Innervation: Adductors

Information: Femoral Nerve

• Plexus: Lumbar

• Muscle Innervation: Quadriceps

Information: Gluteal Nerve

• Plexus: Sacral

• Muscle Innervation: Gluteus Maximus

Information: Sciatic Nerve

• Plexus: Sacral

• Muscle Innervation: Hamstrings

Information: Tibial Nerve

• Plexus: Sacral

• Muscle Innervation: Gastrocnemius & Tibialis Posterior

Information: Superficial Fibular Nerve

• Plexus: Sacral

• Muscle Innervation: Fibularis Longs & Fibularis Brevis

Information: Deep Fibular Nerve

• Plexus: Sacral

• Muscle Innervation: Tibialis Anterior