Google Analytics is a powerful tool that tracks and analyzes website traffic for informed marketing decisions.
Service URL: policies.google.com (opens in a new window)
__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
Structure of three layers of the heart
Epicardium
Location: Outer layer. In the zebrafish heart, the epicardium is a serous, nonmuscular membrane that surrounds the heart and is found close to the compact myocardium.
Function: Prevent excess expansion or movement of the heart
Myocardium
Location: Middle layer of the heart.
Function: Initiates contraction driving the cardiac cycle
Endocardium
Location: The endocardium is the innermost layer of the heart
Function: lines the cavities and valves.
Four chambers of the heart
Right Atrium
Location: The outer walls of the right atrium contribute to the convexity of the right pulmonary surface, the upper right part of the anatomical base, and the upper anterior surface of the heart.
Function: The right atrium receives blood low in oxygen from the body and then empties the blood into the right ventricle.
Right Ventricle
Location: The right ventricle is the most anteriorly positioned chamber of the heart, sitting directly posterior to the sternum.
Function: The right ventricle passes the blood on to the pulmonary artery, which sends it to the lungs to pick up oxygen. The left atrium receives the now oxygen-rich blood from the lungs and pumps it into the left ventricle.
Left Atrium
Location: Viewed from the frontal aspect of the chest, the left atrium is the most posteriorly situated of the cardiac chambers.
Function: The left atrium receives blood full of oxygen from the lungs and then empties the blood into the left ventricle.
Left Ventricle
Location: The left ventricle is one of four chambers of the heart. It is located in the bottom left portion of the heart below the left atrium, separated by the mitral valve.
Function: The left ventricle connects nearly all organ systems through its function to pump oxygenated blood to the body. Left ventricular failure would likely result in impairment to all other organ systems. Organs may react to low ventricular function by initiating mechanisms to increase blood delivery