Anatomy Exam - Topic 14, Chapter 14 P1

Ventral Stream

a pathway in the brain that processes visual information for object recognition

What does the Ventral Stream recognize?

an objects significance

Dorsal Stream

a visual processing pathway that runs from the occipital lobe up to the parietal lobe

Scala Vestibuli

a fluid-filled chamber in the cochlea of the inner ear, located above the scala media

Scala Media

a part of the inner ear and is crucial for hearing

Scala Tympani

one of three fluid-filled compartments in the cochlea of the inner ear that transmits sound vibrations to the auditory nerve

What is the Scala Media filled with?

endolymph

Perilymph

the fluid filling the space between the bony and membranous structures of the inner ear, responsible for transmitting sound vibrations and maintaining balance

Endolymph

the fluid that fills the inner ear’s membranous labyrinth and is essential for hearing and balance

Depolarization

the process where a cell’s internal charge becomes less negative, or more positive, which facilitates the transmission of electrical signals

Sound waves cause…

the tympanic membrane to vibrate, vibrations make ossicles move, perilymph moves basilar membrane which bends the hairs, and now channels can open for depolarization

In depolarization, hair is pilled to open what?

the channel and K+ (positively charged potassium ion)

Hyperpolarization

a biological process where a cell’s membrane potential becomes more negative than its resting state