Pressure waves originate within the inner ear at the and travel through the in the . pressure waves in this structure cause deformation of the . the pressure waves then displace specific regions of the , relating to frequency. hair cells in the of this region are distorted, initiating nerve signals in the of cn viii.

Pressure waves originate within the inner ear at the oval window and travel through the perilymph in the scala vestibuli. Pressure waves in this structure cause deformation of the cochlear duct. The pressure waves then displace specific regions of the basilar membrane, relating to frequency. Hair cells in the cochlea of this region are distorted, initiating nerve signals in the cochlear branch of cn viii.

Explanation:

   To understand what barotrauma is, you need to understand how the pressures work inside your ear. The middle ear is separated from the environment by a membrane called the eardrum; On the other hand, it communicates with the environment through an opening called the Eustachian tube, which opens into the nasal portion of the pharynx.

   When the pressure within the middle ear increases, this pressure increase is balanced with the pressure of the environment by the Eustachian tube. When an airplane gains altitude, for example, the reduced atmospheric pressure inside the airplane's cabin causes gases inside the middle ear to expand. This increased pressure is drained into the environment by the Eustachian tube.

q: compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city,

a:

comparing this to the inside of a food building/company.

all cells are surrounded by a plasma membrane, which protects the cell from its environment, keeping toxic substances out of the cell. it regulates which molecules are allowed to enter and exit the cell.

regulates all cell activity such as cellular metabolism, and growth in addition to storing and maintaining the cell's dna for transcription and replication. determines what proteins to make.

contains the organelles; site of most cell activity

the place where ribosomes do their working activity.

builds the proteins.

prepares proteins for use or export.

responsible for breaking down and absorbing materials taken in by the cell.

maintains cell shape.

transforms one form of energy into another.

sex cells are usually half's then they find another half and make a fertilize egg