Bleeding from the nose (epistaxis) is usually a harmless phenomenon, but may appear in the form of stronger bleeding that threaten life. blood from the nose can be caused by the break of capillaries in the nose that where capillary bleeding usually occurs in the locus kiesselbach - and, artery bleeding usually is caused by rupture of a blood vessel (e. g., trauma, hypertensive,

The cavity is one among the metabolism organs. it's the primary barrier wherever from the air we tend to respire, retain particles of a definite size that ought to not move into the lungs. additional necessary role is to hold out the preparation of air for the lungs, thus it's heated, filtered and moistened. the within of nose is lined with secretion membranes that heat the air. secretion membranes of nose contains capillaries that offer the warmth and play a task as a heater that warms in drawn air. Thus heated air enters the lungs. Capillaries area unit sensitive and may get simply broken notably within the gristle of the septum, at an area known as medical locus Kiesselbach.

C) they are specialized meaning they are designed to do different things

That is true it is called an aftershock