Final answer:
The exam to assess velar length/mobility during phonation is a speech and language assessment, where the patient articulates specific sounds while the movement of the soft palate and related muscles is observed.
Step-by-step explanation:
The exam that assesses velar length/mobility during phonation is typically part of a speech and language assessment conducted by a speech-language pathologist. During this exam, patients are often asked to articulate a series of sounds or words such as "lah-kah-pah" to observe the movement of the muscles around the fauces and the soft palate. This helps in checking for adequate velar function, which is crucial for speech production. It is particularly important to assess the mobility of the soft palate and to note any asymmetry or limited movement that may be indicative of a speech disorder or a neurological condition.