According to the body-cover theory of phonation, which part of the vocal fold is not considered to be a portion of the cover

B. Thyroarytenoid muscle

Explanation:

The options include:

A. Epithelium

B. Thyroarytenoid muscle

C. Superficial layer of the lamina propria

D. Intermediate layer of the lamina propria

The cover-body theory of vocal fold vibration was published by Hurano in 1974 and he described the morphological structure of the vocal folds. He also divided them into the body and cover layer biomechanically.

The main substance of the vocal fold is regarded as the thyroarytenoid muscle. The muscle provides most of the mass of the vocal cord.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."