What is the structure and function of spleen?
The spleen sits in the upper left of the abdomen, protected by the rib cage. It is the largest organ of the lymphatic system — the circulation of the immune system. It recycles old red blood cells and stores platelets (components of the blood that help stop bleeding) and white blood cells.
What is the structure of spleen?
The spleen is the largest lymphatic organ in the body. Surrounded by a connective tissue capsule, which extends inward to divide the organ into lobules, the spleen consists of two types of tissue called white pulp and red pulp. The white pulp is lymphatic tissue consisting mainly of lymphocytes around arteries.
What are the 5 functions of the spleen?
Function
- Stores blood.
- Filters blood by removing cellular waste and getting rid of old or damaged blood cells.
- Makes white blood cells and antibodies that help you fight infection.
- Maintains the levels of fluid in your body.
- Produces antibodies that protect you against infection.
What is the function of spleen PDF?
The spleen is the largest secondary immune organ in the body and is responsible for initiating immune reactions to blood-borne antigens and for filtering the blood of foreign material and old or damaged red blood cells.
Which of the following is the function of the spleen?
Your spleen’s main function is to act as a filter for your blood. It recognizes and removes old, malformed, or damaged red blood cells. When blood flows into your spleen, your spleen performs “quality control”; your red blood cells must pass through a maze of narrow passages.
What is immunological function of spleen?
The physical organization of the spleen allows it to filter blood of pathogens and abnormal cells and facilitate low-probability interactions between antigen-presenting cells (APCs) and cognate lymphocytes. APCs specific to the spleen regulate the T and B cell response to these antigenic targets in the blood.
What Innervates the spleen?
Innervation. The spleen is innervated by autonomic nerves from the celiac plexus, which supply the spleen with both sympathetic and parasympathetic nerves. These nerves form the splenic plexus which reaches the splenic hilum traveling along the splenic artery and its branches.
What is the function of spleen in digestive system?
The spleen is part of your lymphatic system, which fights infection and keeps your body fluids in balance. It contains white blood cells that fight germs. Your spleen also helps control the amount of blood in your body, and destroys old and damaged cells.
What are the histological features of spleen?
The spleen is comprised of red pulp and white pulp. The red pulp is the site of blood filtration and the white pulp is lymphoid tissue that responds to blood-borne antigens. Identify under low power some of the structures that are diagnostic of the organ.
What are the main functions of the spleen quizlet?
The spleen has four functions: (1) it filters antigen from the blood (2) it is the site of B cell maturation, (3) it stores blood, and (4) it destroys old red blood cells.
What organs do the spleen work with?
This is because your spleen is highly vascular organ; it contains many vessels that carry and circulate fluids in your body. It works very closely with your blood and lymph, and can be affected by infection, malignancies, liver disease, parasites, and other conditions.
What are the structures at the hilum of spleen?
Splenic hilum, on the surface of the spleen, admits the splenic artery, vein, lymph vessels, and nerves. Hilum of lung, a triangular depression where the structures which form the root of the lung enter and leave the viscus. Hilum of lymph node, the portion of a lymph node where the efferent vessels exit.