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__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
__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
_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
Histology Art (MT 30 – I) 4 years, 6 months ago Histology Art for Circulatory System
The intima is the inner layer of the artery, which is lined with a smooth tissue called endothelium.
The media is a layer of muscle that allows arteries to handle the heart’s high pressures.
The adventitia is a connective tissue that connects arteries to surrounding tissues.
Tunica externa. This is the thinnest and most outer layer of the vein wall. Connective tissue makes up the majority of it. The tunica externa also contains vasa vasorum, which are microscopic blood vessels that feed blood to the vein walls.
Tunica media. The tunica medium is the layer in the middle. It’s really thin and has a lot of collagen in it. Collagen is a protein that is found in connective tissue.
Tunica intima. This is the most inner layer. A single layer of endothelial cells and connective tissue makes up this structure. One-way valves can be found in this layer, especially in the veins of your arms and legs. Blood cannot flow backward through these valves.
https://www.webmd.com/heart/picture-of-the-arteries
https://my.clevelandclinic.org/health/body/21788-continuous-capillaries
https://www.healthline.com/health/venous-system#vein-structure