SLHS 305 Exam Pack Questions and Answers | New One | Grade A+

7th cranial nerve Ans: facial nerve 8th cranial nerve Ans: see above diagram^, sensorineural part of inner ear afferent neuron Ans: nerve fibers that carry impulses from the sensory organs (peripheral) toward the brain (central); approximately 31,000 afferent auditory neurons come from each c...

Pinna (Auricle) Ans: outer ear, primarily made of cartilage, collects auditory stimuli and funnels it into ear canal Concha Ans: outer ear, deep center portion external auditory meatus Ans: outer ear, opening to the external auditory canal external auditory canal Ans: outer ear, 2-3cm in le...

To vibrate, a source must have these 2 properties Ans: Mass and elasticity A source of sound must be able to __________ Ans: Vibrate Elasticity Ans: The ability to come back to rest To transmit sound, a medium must be capable of _______________ Ans: Being set into vibration The medium must h...

Pinna (2 functions) Ans: outer ear -sound transmission and localization -middle ear protection External auditory meatus Ans: protects against things getting in the ear What is the division of the ear canal? Ans: 1/3 cartilaginous, 2/3 bony What is the narrowing of the ear canal called? Where...

what are the two main functions of the outer ear (pinna)? Ans: sound localization and middle ear protection Where is the endolymph found and what charge does it have? Ans: in the scala media; positive charge Where is the scala vestibuli located? Ans: in the upper portion where does a low frequ...

Psychoacoustics Ans: -the study of psychological response to acoustical stimulation -how you process sound and speech and respond to it Threshold Ans: -a certain intensity above which the organism always responds to the stimulus and below which it never does -LOWER THRESHOLDS ARE BETTER!!! -...

Transduction Ans: The change in sound energy from one form to another Impedance mismatch in the ear Ans: 30 dB SPL loss at the oval window Function of the middle ear Ans: Equalizes pressure Resting potential of the scala media Ans: +80 mv Transduction stages (earliest-latest) Ans: 1. Conden...

endolymph Ans: cochlear fluid w high K, low Na tectorial membrane Ans: the stereocilia are attached to this Heschl's gyrus Ans: primary auditory cortex reticular lamina Ans: upper surface of the organ of Corti, which is composed of a tight mosaic of the tops of all the cells stria vascula...