Google Analytics is a powerful tool that tracks and analyzes website traffic for informed marketing decisions.
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__utmb
Used to distinguish new sessions and visits. This cookie is set when the GA.js javascript library is loaded and there is no existing __utmb cookie. The cookie is updated every time data is sent to the Google Analytics server.
30 minutes after last activity
__utmc
Used only with old Urchin versions of Google Analytics and not with GA.js. Was used to distinguish between new sessions and visits at the end of a session.
End of session (browser)
__utmz
Contains information about the traffic source or campaign that directed user to the website. The cookie is set when the GA.js javascript is loaded and updated when data is sent to the Google Anaytics server
6 months after last activity
__utmv
Contains custom information set by the web developer via the _setCustomVar method in Google Analytics. This cookie is updated every time new data is sent to the Google Analytics server.
2 years after last activity
__utmx
Used to determine whether a user is included in an A / B or Multivariate test.
18 months
_ga
ID used to identify users
2 years
_gali
Used by Google Analytics to determine which links on a page are being clicked
30 seconds
_ga_
ID used to identify users
2 years
_gid
ID used to identify users for 24 hours after last activity
24 hours
_gat
Used to monitor number of Google Analytics server requests when using Google Tag Manager
1 minute
_gac_
Contains information related to marketing campaigns of the user. These are shared with Google AdWords / Google Ads when the Google Ads and Google Analytics accounts are linked together.
90 days
__utma
ID used to identify users and sessions
2 years after last activity
__utmt
Used to monitor number of Google Analytics server requests
10 minutes
EPIGLOTTIS
The epiglottis is a large, flat flap cartilage that controls entry to the trachea. During breathing, the epiglottis is in an upright position and keeps the entry to the trachea open. During swallowing, the epiglottis covers the entry to the trachea, redirecting food to the esophagus.
The thyroid, cricoid, and arytenoid cartilages are made of hyaline cartilage. The epiglottis, corniculate, and cuneiform are elastic cartilages.
OLFACTORY EPITHELIAL CELLS
Olfactory epithelial cells are modified neurons interspersed within the olfactory epithelium. The cell bodies of these olfactory neurons reside within the epithelium and have cilia that project onto the surface.
These cilia are not visible in the light microscope. The axons of these neurons extend to the olfactory bulb located within the cranial cavity.
GOBLET CELLS
The respiratory epithelium is primarily composed of ciliated columnar epithelial cells and interspersed with a number of goblet cells. Goblet cells are columnar epithelial cells (not ciliated) that produce and secrete mucus that is used to trap dust and pollen particles.
The cilia of regular epithelial cells beat in a constant sweeping motion, propelling the mucus and debris upwards toward the throat or the nasal cavity.