The pituitary gland (hypophysis cerebri) is derived from 2 sources. The anterior lobe is an upgrowth of ectoderm from the roof of the stomodeum (primitive buccal cavity), while the posterior lobe is a down growth of neuroectoderm from the diencephalon. 4th week: a diverticulum, Rathke’s pouch, grows upwards from the roof of the stomodeum towards the…
Category: PGMEE, MRCS, USMLE, MBBS, MD/MS
Medical knowledge in bullet points with understandable language, simplified images and graspable mnemonics.
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Micturition reflex
Micturition (Urination) is the ejection of urine from the urinary bladder through the urethra to the outside of the body. It is a type of reflex with voluntary control. The micturition cycle occurs in 2 phases: Urinary Storage Mnemonic: Storage = Sympathetic 1. Stimulus: Urine filling until tension in the…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Synovial Fluid Analysis – Made Easy
What investigations to order for synovial fluid sample? Mnemonic: 5 Cs Chemistry (pH, LDH, glucose, protein) Cell counts Cytology Culture Crystals Interpretation of synovial fluid analysis Gross Normal Non-inflammatory Inflammatory Septic Crystal Hemorrhagic Volume (ml) <3.5 >3.5 >3.5 >3.5 >3.5 >3.5 Viscosity High High Low Variable Variable Variable Color Colorless…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Blood Supply of Talus
3 Main Arteries Extraosseous and intraosseous anastomoses formed by 3 main arteries: Posterior tibial artery ~ 17% contribution Anterior tibial (dorsalis pedis) artery ~ 36% contribution Perforating peroneal artery ~ 47% contribution Major Branches Tarsal sinus artery: Arises from – Dorsalis pedis artery (frequently) or Lateral tarsal artery (branch of…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Ankle block : Nerves and Landmarks
Mnemonic: The 3 nerves starting with letter “S” are sensory only and supply superior and side aspect of foot (dorsum). 1. Superficial peroneal nerve (L4-S1): located lateral to Extensor Digitorum Longus (EDL) Supplies: dorsum of foot and toes except between the great and 2nd toe 2. Sural nerve (S1-S2): It…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Blumensaat line
Synonym: Intercondylar line, Blumensaat’s line Definition of Blumnesaat line It is the tangent drawn along the roof of intercondylar notch or fossa of the distal femur on the saggital or lateral view. Morphologic variations of Blumensaat line (Iriuchishima’s classification) Straight type (35%): appear more or less straight Small hill type…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Carpal bones – Mnemonic
There are certain well-known sentences used as a mnemonic to remember the names and arrangement of the 8 carpal bones in 2 rows. She Looks Too Pretty, Try To Catch Her Some Lovers Try Positions That They Cannot Handle So using this mnemonic, we will learn the arrangement of the…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Blood supply of femoral head
Three sources of Blood supply Vascular arragement of Proximal Femur a. Extracapsular ring (At the base of femoral neck) These circumflex femoral arteries branch from: Trochanteric anastomosis (centered on trochanteric fossa): Descending branch of SGA + ascending branch of LFCA, MFCA and IGA Cruciate anastomosis (centered on lesser trochanter): Descending…