Where in the spleen are immune responses activated?
In the WP, splenic naïve and central memory T cells are activated in response to cognate antigen and T-dependent B cell germinal center (GC) reactions resulting in antibody production (8). Inside the WP, compartmentalization separates the T and B cell areas into distinct zones, analogous to those found in LNs (Fig. 1).
What is the role of the spleen in the immune response?
Your spleen also plays an important part in your immune system, which helps your body fight infection. Just as it detects faulty red blood cells, your spleen can pick out any unwelcome micro-organisms (like bacteria or viruses) in your blood.
Where are splenic macrophages found?
In the different compartments of the spleen, macrophage populations can be found that have different functions depending on their localization. In the lymphoid compartment of the spleen, the white pulp, macrophages are in essence similar to populations found in lymph nodes and other organized secondary lymphoid organs.
Where is the spleen and pancreas located?
The pancreas is located behind the stomach, extending from the duodenum to the spleen, while the spleen is located left to the stomach in contact with the tail of the spleen in the left upper part of the abdomen.
In which abdominal quadrant is the spleen located?
left upper quadrant
The spleen is located under the ribcage and above the stomach in the left upper quadrant of the abdomen.
What macrophages are found in the spleen?
Within these splenic tissues, different subsets of macrophages have been identified in humans. The most abundant type of macrophage is the red pulp macrophage, characterized by expression of CD163, which is thought to be involved in the clearance of aged red blood cells from the circulation and iron metabolism.
What is the marginal zone of the spleen?
The marginal zone is the region at the interface between the non-lymphoid red pulp and the lymphoid white-pulp of the spleen. (Some sources consider it to be the part of red pulp which borders on the white pulp, while other sources consider it to be neither red pulp nor white pulp.)
What Abdominopelvic quadrant is the spleen in?
These organs are found in the left upper quadrant of your body: Stomach. Pancreas. Spleen.
Which of the following statements is correct regarding the location of the spleen and stomach?
95 Cards in this Set
| a section that divides the body on the longitudinal plane into equal right and left parts | median or midsagittal |
|---|---|
| Which of the following statements is correct regarding the location of the spleen and stomach | Both of these organs are located in the left upper quadrant |
What is located below the spleen?
The pancreas is a wing-shaped gland that extends from the duodenum (the upper portion of the small intestine) to the spleen. It serves both digestive and endocrine functions.
How can the presence of an enlarged spleen be used to diagnose?
By making these correlations, it is possible to utilize the presence of an enlarged spleen to plan a patient’s subsequent evaluation and quickly and efficiently reach the correct diagnosis. The mechanism underlying splenic enlargement varies based on the etiology.
Where is the spleen located?
Key facts about the spleen Definition An intraperitoneal lymphoid organ found Location Left hypochondriac region (left upper qu Structure Capsule, trabeculae, white pulp, red pul Function Immune surveillance, proliferation and m Neurovascular supply Artery: splenic artery Vein: splenic vei
What is the red pulp of the spleen?
The red pulp (RP) makes up the majority of the tissue and has an immune function distinct from that of the WP. Unlike lymph nodes (LNs), the spleen lacks afferent lymphatic vessels and therefore all cells and antigen enter the spleen via the blood. Open in a separate window Figure 1
Why is the microscopic anatomy of the spleen important?
Understanding the microscopic anatomy of the spleen is important for understanding its function. Numerous septa called trabeculae extend from the dense irregular fibroelastic connective tissue of the capsule into the parenchyma of the spleen. Both the capsule and trabeculae contain myoepithelial cells which have the ability to contract.