MEDIVEERSETHE PRACTICAL HUB
Locate genioglossus on this anatomical reference. Read the original plate labels to confirm the view and adjacent structures.
Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.
Tongue: extrinsic muscles: labelled teaching diagram. Original labels and colours retained.
Image: OpenStax College / university open textbook · Source / original · CC BY 4.0Numbered markers and focused views are Mediveerse learning overlays; the original reference is linked above.
Tongue: extrinsic muscles
Understand what you see.
Extrinsic muscles position the tongue during speech and swallowing.
Zoom into the original labels. Practise pointing out each structure, then explain it aloud. Diagrams are teaching references; specimen appearance and slide staining vary.
How to recognise it.
- Genioglossus is a broad fan-shaped muscle
- Hyoglossus ascends from the hyoid
- Styloglossus descends from the styloid region
Point them out.
Tap a number to open its reference, zoom in and locate the structure. Numbers stay the same across views. This key follows landmarks visible in the reference images.
Think first. Then reveal.
Say your answer aloud before opening the suggested response.
Examiner-style prompts: identify the structure, explain its relations, then answer the applied follow-up. These are revision questions, not authenticated past papers.
01How would you identify tongue: extrinsic muscles?+
Genioglossus is a broad fan-shaped muscle. Hyoglossus ascends from the hyoid. Styloglossus descends from the styloid region.
02Which tongue muscle is the exception to hypoglossal motor supply?+
Palatoglossus is supplied through the pharyngeal plexus via the vagus nerve; the other tongue muscles are supplied by XII.
03Why does a weak genioglossus affect tongue protrusion?+
Each genioglossus pushes the tongue toward the opposite side; unilateral lower motor neuron XII weakness causes deviation toward the weak side.
04Differentiate intrinsic and extrinsic tongue muscles.+
Intrinsic muscles change tongue shape; extrinsic muscles have attachments outside the tongue and chiefly alter its position.
05Which nerve carries general sensation from the anterior two-thirds?+
Lingual nerve (V3). Taste from most of this region travels with chorda tympani (VII); circumvallate papillae are an important IX exception.
Read the references.
Credited anatomical plates, microscopy and university teaching references. Individual image credits appear below the viewer. Historical plates can use older terminology; use the lesson text for current names.