Answer to Question 1
Answer: Hair cells are anchored to the basilar membrane. Cilia that project from the inner hair cells are moved by currents produced when the basilar membrane moves relative to the overlying tectorial membrane. The cilia of a hair cell are interconnected by tip links and as these move, the attachment points of the adjacent cilia open a channel to potassium (and calcium), which creates a receptor potential.
Answer to Question 2
Answer: This answer is summarized in Figure 7.9 (page 215). The cochlear nerve projects afferent fibers to the dorsal and ventral cochlear nuclei, then to the superior olivary complex, and then through the lateral lemniscus to the inferior colliculusthen to the thalamic medial geniculate nucleus, and then to the primary auditory cortex.
Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I
Auscultation. The stethoscope is pressed against the body wall to listen for sound waves associated
Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery
The Transduction of Sound Vibrations in the Auditory System
The thymus, a primary lymphoid organ where T cells mature.
Target Organ Effects