Lateral wall of nasal cavity has:
Mnemonic: SPIN
1. Superior meatus: Posterior ethmoidal sinus
2. Inferior meatus: Nasolacrimal duct
The sphenoidal sinus drains into spheno-ethmoidal recess (superior to superior concha).
All others drain into middle meatus:
Mnemonic: AM/FM
It is an alpha-numeric system of classification developed by Muller and colleagues. Step 1: 1st digit specifies bone Step 2: 2nd digit specifies segment of bone Square definition: Proximal and distal segments are defined by a square whose sides = length of widest part of epiphysis Exceptions of square definition:…
As discussed earlier in – TNM Classification and Cancer Staging Simplified, Urinary bladder is a hollow organ whose “T” classification resembles that of the gastrointestinal tract. Since, the regional lymph nodes of the urinary bladder also lie beyond the serosa like in colon and rectum, positive regional nodes are usually…
Principles of development Development proceeds from the head downward (cephalocaudal principle). Development proceeds from the center of the cody outward (proximodistal development). Development depends on maturation and learning. Development proceeds from the simple to the more complex. Growth and development is a sequential and continuous process. Growth and development proceed…