What is the meaning of transition zone?
Transition zone (Earth), a part of the Earth's mantle located between the lower mantle and the upper mantle. Transition zone, the region between the near and far fields of a transmitting antenna. Transition zone (TZ), a glandular region of the prostate— see Prostate#Zones.
What is a transition zone short answer?
"Transition Zone" A physical area in which the land undergoes a radical change, like from arid to tropical.
What is a transition zone in world geography?
• Transition zone- physical area in which land. undergoes a radical change.
Why is it called the transition zone?
A transition zone is a physical area in which the land undergoes a radical change such as from arid to tropical.
What lives in the transition zone?
Many animals, including some of the most populous species (e.g., flying squid, Pacific pomfret, blue sharks, Pacific saury) that inhabit the Transition Zone undergo extensive seasonal migrations from summer feeding grounds at the subarctic fronts or within subarctic waters to and from winter spawning grounds in the ...
What is the transition zone in the ocean?
The waters of most of the world's oceans are stacked like the layers of a cake. Each layer is a different temperature. The top layer is warm, the bottom layer is cold, and the layer in the middle is a transition zone -- the region with the biggest change in temperature. That layer is known as the thermocline.
What are the features of transition zone?
The transition zone exhibits the effects of cryoturbation, contains abundant redistributed organic carbon, is enriched by ice in the forms of lenses, veins, and nets (reticulate vein ice) and has abundant soil moisture.
How much water is in the transition zone?
In contrast, the mantle transition zone (MTZ) at a depth of 410 to 660 km is considered to be a potential water reservoir because its dominant minerals, wadsleyite and ringwoodite, can contain large amounts of water [up to 3 weight % (wt %)].
What is the transition zone in the ocean?
The waters of most of the world's oceans are stacked like the layers of a cake. Each layer is a different temperature. The top layer is warm, the bottom layer is cold, and the layer in the middle is a transition zone -- the region with the biggest change in temperature. That layer is known as the thermocline.
What is transition zone in biology?
The transition zone is an area where environmental conditions and ecological factors allow both the mixture and the co-occurrence of biotic components that have different geographical origins, but also constrains their distribution further one into the other.
What is the transition zone of the sun?
Transition Region - The transition region is a very narrow (60 miles / 100 km) layer between the chromosphere and the corona where the temperature rises abruptly from about 8000 to about 500,000 K (14,000 to 900,000 degrees F, 7700 to 500,000 degrees C).
What is transition zone in ECG?
The QRS transition zone refers to where the QRS complex switches from being mostly negative to mostly positive, from the point of view of the chest leads, V1 through V6, which “view” the heart through the horizontal plane.
What is the transition zone?
Transition zone. The transition zone is part of the Earth’s mantle, and is located between the lower mantle and the upper mantle, between a depth of 410 and 660 km. The Earth’s mantle, including the transition zone, consists primarily of peridotite, an ultramafic igneous rock.
What is the numerical value of transition zone in Chaldean numerology?
The numerical value of transition zone in Chaldean Numerology is: 3
What is transition zone?
Politically, geographically and socially, transition zones serve as internal and external markers. Within countries, they distinguish members of different political groups, socioeconomic statuses and religious beliefs.
What are political boundaries?
Political boundaries sometimes share natural boundary lines, and change over time with changes in political leadership. While social and political boundary lines create artificial borders based on human societies, physical boundaries form based on natural landscapes and geography.
What is the transitional zone of the prostate?
The transitional zone contains the ductal system that eventually terminates in the periprostatic urethra. It is the innermost layer of the prostate and is the region where BPH originates. The prostate gland can be viewed as having 4 major zones.
What does tz mean in a PZ?
This image was described above in the “character” section but is repeated in the context of the parts of the gland. PZ = peripheral zone, CZ = central zone, tz = transitional zone and fmz = fibromuscular zone or fibromuscular layer
Which zone is the largest portion of the posterior wall?
The peripheral zone is the largest portion and occupies the base, extending the entire length of the posterior wall to the apex. The central zone lies inward of the peripheral zone and is that part through which the ejaculatory duct courses. The transitional zone surrounds the urethra, and the anterior fibromuscular layer runs from the base to ...
How many zones does the prostate gland have?
The prostate gland can be viewed as having 4 major zones. In the young adult male the outer zone called the peripheral zone, accounts for 70% of the parenchyma. Inward of the peripheral zone is the central zone that accounts for 20% of the parenchyma.
What makes it cancer?
Although PSA levels or a digital rectal exam may hint at cancer, only a pathologist looking at cells in tissue samples can make the diagnosis. The following are among the key features they look for:
Gleason score
If your biopsy finds cancer, the first piece of information you’ll want to note is the Gleason score. This numerical value grades prostate tumor cells according to how they look compared with normal cells and how mutated they appear under a microscope, a quality known as differentiation.
Figure 1: The Gleason score
The Gleason score is a numerical value that grades prostate tumor cells according to how they appear compared to normal prostate cells (a quality known as differentiation).
Number of cores
An ideal report also specifies how many samples, or cores, were removed during the biopsy. The standard number of cores used to be six: three from the right side of the prostate and three from the left. However, this limited sampling meant that cancerous portions of the prostate, if there were any, might be missed.
Anatomic location
Ideally, the pathologist who prepares your report will have separated and labeled the core samples according to what part of the prostate they came from.
Figure 2: Zones of the prostate
To help your doctor more precisely determine the location of prostate cancer or another condition, such as high-grade PIN, your pathology report may name specific areas. For example, it may refer to the apex, located at the bottom of the prostate; the base, at the top; or the mid zone, the area between the apex and base.
Extent of cancer
In addition to paying attention to the number of cores taken, you’ll want to look at how much cancer was found.
