ASHA Anatomy and Physiology of Communication 3

Question 1

The arcuate fasciculus is a white matter pathway that connects which two language-processing regions?

Accepted Answer

Broca's area and Wernicke's area

Answer

The arcuate fasciculus arcs around the Sylvian fissure, linking the inferior frontal (Broca's) and posterior temporal (Wernicke's) language areas and supporting repetition and phonological processing.

Question 2

Which intrinsic laryngeal muscle is the primary adductor of the vocal folds, closing the glottis for phonation?

Accepted Answer

Lateral cricoarytenoid (LCA)

Answer

The lateral cricoarytenoid rotates the arytenoid cartilages anteromedially, adducting the vocal processes and closing the membranous glottis for phonation.

Question 3

The saccule and utricle (otolith organs) of the vestibular system primarily detect:

Accepted Answer

Linear acceleration and the gravitational vertical

Answer

The otolith organs contain calcium carbonate crystals (otoconia) that deflect hair cells in response to linear accelerations and static gravitational tilt.

Question 4

Conductive hearing loss results from pathology affecting which anatomical region(s)?

Accepted Answer

Outer ear and/or middle ear

Answer

Conductive hearing loss occurs when sound cannot be efficiently transmitted through the outer ear canal, tympanic membrane, or ossicular chain to the inner ear.

Question 5

The cricothyroid (CT) muscle increases vocal fundamental frequency primarily by:

Accepted Answer

Elongating and tensioning the vocal folds by tilting the thyroid cartilage forward

Answer

CT contraction draws the thyroid and cricoid cartilages closer anteriorly, stretching the vocal folds longitudinally, increasing their stiffness and raising F0.

(ASHA) American Speech-Language-Hearing Association Certification Practice Test

(ASHA) American Speech-Language-Hearing Association Certification Practice Test

ASHA Anatomy and Physiology of Communication 3