Jacobson’s organ is
In most mammals the nasopalatine ducts are patent and together with Jacobson's organs, are considered as auxiliary olfactory sense organs.
Jacobson's organ is a small ellipsoid (cigar shaped) structure lined with olfactory epithelium that extends from the nose to the oral cavity.
Funnel shaped
Along with nasopalatine ducts are called as auillary olfactory sense organs
Extends form eyes to oral cavity
All of the above