Mu´cus. A viscid fluid secreted by the mucous membrane, which it serves to moisten and defend.

Mus´cle. A bundle of fibres enclosed in a sheath.

Mus´cu-lar. Relating to a muscle.

My-o´des. A term applied to certain muscles of the neck.

Na´sal. Relating to the nose.

Na´sus. [L., the nose.] The nostrils.

Nerve. An organ of sensation and motion in animals.

Nerv´ous. Relating to the nerves.

Neu-ri-lem´a. [Gr. νευρον, neuron, a nerve, and λεμμα, lema, a sheath.] The sheath or covering of a nerve.

Ni´grum. [L.] Black.