Functional Anatomy of Digestive System — Flashcards

Flashcard 1: All muscles of the larynx are _____, except posterior cricoarytenoids

Answer: adductors

Flashcard 2: The _____ muscle is isolated by having the patient adduct and depress their eye

Answer: superior oblique

Flashcard 3: On the basis of function:_____ sulcus - A sulcus that separates areas differing in structure and function at its floor.

Answer: Limiting

Flashcard 4: Right _____ and left IO are yoke muscle pairs for dextroelevation

Answer: SR

Flashcard 5: Which muscle is known as the safety muscle of the tongue, and why?

Answer: Genioglossus; it protrudes the tongue, preventing it from falling back and obstructing the airway.

Extra: The genioglossus is the only muscle that protrudes the tongue. In patients with bilateral hypoglossal nerve injury or under deep anesthesia, the loss of genioglossus tone allows the tongue to fall posteriorly, potentially causing airway obstruction.

Flashcard 6: Right _____ and left IR are yoke muscle pairs for levodepression

Answer: SO

Flashcard 7: The lumbricals _____ at the MCP joint and extend at the PIP and DIP joints

Answer: flex

Flashcard 8: _____ of trunk against resistance is by the action of ipsilateral contraction of external oblique (EO) and Internal oblique (IO)

Answer: Lateral flexion