Origin: Tibial nerve (both medial and lateral plantar nerve) Similar to: Course and innervation: Medial plantar nerve Lateral plantar nerve Origin Larger branch of tibial nerve Smaller branch of tibial nerve Course Deep to abductor hallucis muscleBetween 1st and 2nd plantar layers Deep to abductor hallucis muscleBetween 1st and 2nd…
Tag: Anatomy
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Clavipectoral Fascia
Extent: Function: Structures piercing the clavipectoral fascia: Mnemonic: CLAP Surgical relevance:
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Parasympathetic ganglia of Head and Neck
Important points: Mnemonics: 1. COPS 3977 2. C is 3rd letter hence related to cranial nerve III 3. S for Sphenopalatine and Submandibular and S for Seven and is related to Superior Salivatory nucleus 4. All postganglionic fibers are carried by trigeminal nerve (Cranial nerve V) Ganglion Nucleus Pre-ganglionic Post-ganglionic…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Parotid Gland : Mnemonics
Relations Anterior: 3 “M” Posterior: Mastoid and attachments Medial (Parotid bed): VANS Structures traversing the parotid gland Mnemonic: FACER Parotid gland innervation 1. Parasympathetic: Secretomotor (from Otic ganglion) – Serous, water rich saliva Mnemonic: PAR–O–T–Id G–L–And PARotid gland ← Auriculotemporal nerve ← Otic ganglion ← Lesser petrosal nerve ← Tympanic…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Superficial and Deep Perineal Space or Pouch
Superficial and deep perineal space is located in the urogenital triangle, the boundaries of which are: Analogy: Remember a big mac. It has 3 layers of BUN and 2 hamburger PATTIES. Posteriorly, all 3 Fascias are attached to the perineal body, closing the spaces. Superficial Perineal Space Mnemonics: 1. Superficial…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Spinal segments vs Vertebral level
Spinal segment: The part of spinal cord to which a pair of spinal nerves (right and left) is attached. Cause of mismatch between spinal segments and vertebral level: General rule: Vertebral level Add Spinal segment Cervical + 0 Same C7-T1 C8 T1-T3 +1 T1-T4 T3-T6 +2 T5-T8 T7-T8 +3 T9-T11…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Median, Ulnar and Radial Nerve – Course and Innervation
Median nerve, Ulnar nerve and Radial nerve are the 3 major nerves of the upper limb originating from the brachial plexus. Some important neuroanatomic relationships in the forearm are: 1. Medial nerve: Crossed by brachial artery from lateral to medial just above the elbow to lie medial to brachial artery…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Mediastinum : Simplified
It is the region in thoracic cavity between the pulmonary cavities (covered by mediastinal pleura and excludes the lungs). Extent: Thoracic outlet (1st rib) to Diaphragm (T12) Superior mediastinum: Upper extent Thoracic outlet Contents (superficial to deep) 1. Glands (Thymus and Lymph nodes)2. 3 Veins (Brachiocephalic Lt. and Rt. and…