Assertion: penis | /r/HasProperty | maintained in flaccid state
Facets:
value: normally
type: DEGREE
value: through tonic noradrenaline
type: CAUSE
Source sentences:
text: The penis is normally maintained in a flaccid state through tonic noradrenaline (norepinephrine) release from its sympathetic innervation, which causes contraction of the smooth muscle of the penile artery and CCP (Simonsen et al. 2002) through α 1 –adrenoceptors and calcium-mediated pathways (de Tejada et al. 2004).