Floor of mouth

Cross-section showing structures in floor of mouth

A. Hypoglossus

B. Genioglossus

C. Glossopharyngeal

D. Lingual artery

E. Mylohyoid

F. Hyoid with fibrous sling

G. Body of mandible

H. Lingual nerve

I. Sublingual gland with submandibular duct behind

J. Hypoglossus nerve (CN XII)

K. Lingual nerve

L. Submandibular gland crossed by facial artery

M. Facial vein

N. Investing layer of deep cranial fascia and platysma muscle