This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Dangerous area of scalp is ? 
Select and explain. 
A. Superficial fascia, B. Loose areolar tissue, C. Pericranium, D. Aponeurosis
B: Loose areolar tissue
Answer: B: Loose areolar tissue 
Explanation: Ans. is 'b' i.e., Loose areolar tissueThe scalp consists of five layers:SkinClose network of connective tissue (superficial fascia)Aponeurosis (galea aponeurotica) with occipitofrontalis musclesLoose areolar (subaponeurotic) tissuePericranium (outer periosteum of skull)First three layers are intimately connected and move as one unit, and are called surgical layers of scalp or scalp proper.Loose subaponeurotic areolar tissue (4th layer) is called dangerous area of scalp because it contains emissary veins through which infection in subaponeurotic space may spread readily to intracranial venous sinuses.