Tissue fluid and lymph
"Tissue fluid and lymph" is a free, interactive Class 11 Biology simulation for NEET, built on the NCERT section "Lymph (tissue fluid)" in Body Fluids and Circulation. Blood pressure pushes water and small solutes out of capillaries; albumin pulls some back; lymph vessels carry the rest to the veins, and swelling follows if they block. NEET has asked about this idea 1 time in 10 years of papers.
From the lesson Lymph (tissue fluid) in Body Fluids and Circulation. Change the values and watch what happens.
What it shows
NCERT §15.2
Blood pressure pushes water and small solutes out of capillaries; albumin pulls some back; lymph vessels carry the rest to the veins, and swelling follows if they block.
Controls
3 to try
- Slidercapillary pressure 10–50 mm Hg
- Sliderplasma albumin 1–6 g/dL
- Togglelymph drainage on / off
Try this
Keep the tissue from swelling (net fluid ≤ 0.1 units) with lymph drainage switched off.
Common mistake
Proteins and RBCs leak into tissue fluid.
In NEET
10 years of papers
Asked 1 time in 10 years of NEET.
See the past questions: Body Fluids and Circulation (chapter)
The idea behind it
NCERT §15.2
- As blood flows through capillaries in the tissues, water together with small dissolved molecules seeps out into the gaps around the cells. The larger proteins and most formed elements stay inside the vessels.
- The fluid that leaves is interstitial fluid or tissue fluid. Its mineral distribution is the same as that of plasma.
- All exchange of nutrients, gases and so on between blood and cells happens through this fluid.
- The lymphatic system, a network of vessels, collects this fluid and drains it back into the major veins. The fluid inside the lymphatic system is called lymph.
- Lymph is colourless and contains specialised lymphocytes responsible for immune responses. It also carries nutrients, hormones and other substances.
- Fats are absorbed into lymph through the lacteals in the intestinal villi.
- Lymph resembles blood except for its protein content and formed elements.
Questions
4 answers
- What does the "Tissue fluid and lymph" simulation show?
- Blood pressure pushes water and small solutes out of capillaries; albumin pulls some back; lymph vessels carry the rest to the veins, and swelling follows if they block.
- What mistake does the "Tissue fluid and lymph" simulation fix?
- A common mistake it clears up: proteins and RBCs leak into tissue fluid.
- Has NEET asked about this idea?
- Yes. NEET has asked about this idea 1 time in 10 years of papers.
- Is this simulation free?
- Yes. It is free and runs in the browser on a phone or a laptop. It belongs to the lesson "Lymph (tissue fluid)" in Body Fluids and Circulation (Class 11 Biology).
Embed this simulation
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