Definition of musk. 1  1a : a substance with a penetrating persistent odor obtained from a sac beneath the abdominal skin of the male musk deer and used as a perfume fixative; also : a similar substance from another animal or a synthetic substituteb : the odor of musk; also : an odor resembling musk especially in heaviness or persistence.
Inferior Nasal Concha. The Inferior nasal concha is the most caudally based of the three nasal conchae. While the superior and middle nasal conchae form part of the perpendicular plate of the ethmoid bone, the inferior nasal concha is a bony structure by itself.It sits on the vertical bony plate known as the nasal septum, separating the nasal cavity into two bilateral and symmetrical anatomical caves.nferior Nasal Concha. The Inferior nasal concha is the most caudally based of the three nasal conchae. While the superior and middle nasal conchae form part of the perpendicular plate of the ethmoid bone, the inferior nasal concha is a bony structure by itself.
The anterior surface of the body [Fig. 2] presents, in the middle line, a vertical crest, the sphenoidal crest, which articulates with the perpendicular plate of the ethmoid, and forms part of the nasal septum. On either side of the crest is an irregular opening leading into the corresponding sphenoidal air sinus.he superior surface of the body [Fig. 1] presents in front a prominent spine, the ethmoidal spine, for articulation with the cribriform plate of the ethmoid bone; behind this is a smooth surface slightly raised in the middle line, and grooved on either side for the olfactory lobes of the brain.