Erectile tissue

[2] During penile or clitoral erection, the corpora cavernosa will become engorged with arterial blood, a process called tumescence.

This process of stimulation, due to internal or external stimuli, is also known as sexual arousal.

The corpus spongiosum is a single tubular structure located just below the corpora cavernosa in males.

Erectile tissue is present in the anterior part of the nasal septum[4] and is attached to the turbinates of the nose.

This process is controlled by the autonomic nervous system with parasympathetic dominance being associated with congestion and sympathetic with decongestion.