Some lymphocytes go to the thymus where they develop into blood-circulating T cells that are connected to the lymph nodes and spleen. B cells continue to grow and mature in the bone marrow before entering the lymphatic and circulatory systems. A B cell makes an antibody. T cells, B cells, dendritic cells, and macrophages make up lymph nodes. Most tissues have nodes that drain fluid. Before the lymph is returned to the circulation, antigens are removed from it at the lymph node. Following stimulation by foreign antigens of bacteria, viruses, and tumour cells, the primary role of B lymphocytes is to differentiate into antibody secreting plasma cells.
The lymphatic system is a network of tissues, blood arteries, and organs that facilitates the movement of a colourless, watery fluid into the circulation or bloodstream. The lymph back is the term for this fluid.
The arteries, capillaries, and smaller arterioles in your body each day get about 20 litres of plasma.
After providing nutrients to the body's cells and tissues and collecting their waste, around 17 litres are returned to the circulation via veins. The 3 litres that are left seep through capillaries into the tissues of your body.
The surplus fluid, which is now known as lymph, is absorbed by the lymphatic system and sent to the circulation from tissues all over your body.
Your lymphatic system performs a variety of functions, including
The lymphatic system, as previously established, gathers extra fluid that drains from cells and tissues all throughout your body and sends it to your circulation, where it is then circulated throughout your body.
Proteins and fats are taken up by lymph from the digestive tract and then transferred into the circulation.
The immune system's lymphatic system defends the body from outside interference. It creates, after which it releases white blood cells called lymphocytes (which are immune cells), as well as other immune cells that keep track of and then eliminate foreign invaders including bacteria, viruses, parasites, and fungus.
transports and gets rid of any waste items that might harm the body.
List I | List II | ||
---|---|---|---|
A | P wave | I | Heart muscles are electrically silent. |
B | QRS complex | II | Depolarisation of ventricles. |
C | T wave | III | Depolarisation of atria. |
D | T-P gap | IV | Repolarisation of ventricles. |
Match List I with List II.
List I | List II | ||
A | P-wave | I | Beginning of systole |
B | Q-wave | II | Repolarisation of ventricles |
C | QRS complex | III | Depolarisation of atria |
D | T-wave | IV | Depolarisation of ventricles |
Choose the correct answer from the options given below:
Liquid substances in the animal or human body are known as body fluids. The human body consists of about 60-67% body fluids. The chief components of the human body fluids are blood and lymph. Blood comprises a matrix called plasma with blood corpuscles floating in it. The blood cells are white blood cells, red blood cells, and platelets. Lymph consists of lymph cells.
Read More: Body Fluids and Circulation
The different types of body fluids:
The main components of blood involve;
A colorless fluid present in the interstitial tissues is lymph. It circulates all over the lymphatic system. It can be described as blood without the RBCs. The exchange of hormones, nutrients, and gases occurs via this fluid. It contains lymphocytes that play a major function in the immune responses of the body.
The movement of blood across the vessels of the body that carries nutrients and gases along with it and removes waste from the different parts of the body is circulation.
There are two types of circulatory systems: