Synonyms: Nervus radialis, Musculospiral nerve Recommended reading: Course 1. Origin: Terminal branch of Posterior cord of brachial plexus (Root value: C5, C6, C7, C8, T1) 2. Posterior axilla: It lies behind the axillary and upper part of the brachial arteries, passing anterior to tendons of subscapularis, lattisimus dorsi and teres…
Tag: Anatomy
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Cavernous Sinus – Simplified
Synonyms: Sinus cavernosus, Lateral sellar compartment Definition and Extent Size: 2 cm long and 1 cm wide Walls: Extent: Contents of Cavernous sinus These are closely related to the floor of sinus and are separated from the interior of sinus by endothelium. 4 nerves in the lateral wall: Note: Mandibular…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Epistaxis Basics : Anatomy, Physiology and Pathology
Synonyms: Nosebleed, Nasal bleeding Definition: Epistaxis is defined as bleeding from the nasal cavity. It ranges from minor blood-tinged mucus when blowing the nose to life-threatening hemorrhage. Epidemiology: Age: Bimodal distribution – common in <10 years and >60 years Season: Winter Anatomy and Physiology: Why is the nose prone to…
Applied anatomy of Anatomical Snuff Box
Synonyms: Radial fossa, Foveola radialis Note: Depression in the humerus which receives the head of radius is also named as Radial fossa Definition: It is a triangular shaped depression in the radial or lateral aspect of the dorsum of the hand which is seen when the thumb is extended fully….
Applied Anatomy of Palatine Tonsils
Synonyms: Tonsils (Unless otherwise specified, tonsils usually refers to palatine tonsils), Faucial tonsils Definition: Almond shaped, ovoid mass of lymphoid tissue situated bilaterally in the lateral wall of oropharynx within the tonsilar recess or sinus bounded by palatoglossal fold anteriorly i.e. anterior pillar and palatopharyngeal fold posteriorly i.e. posterior pillar….
Applied Anatomy of Tympanic Membrane
Synonyms: Ear drum, Myringa Definition: Tympanic membrane is a thin membrane that separates the external ear from the middle ear. Anatomy: Site: Located at medial end of the external auditory canal, separating it from the middle ear cavity Position: At an angle of 55° to the horizontal to the floor…