Heyyy, I need some help in Bio...
1) Regarding the kidneys, what's the difference between the first renal tubule and the second? What is the Loop of Henle? And what is the function of these parts?
2) In transpiration, can someone please explain root pressure, capillary action and transpiration stream?
Thanks in advance
1. The first renal tubule is when the bloody gets filtered through the glomerulus into the Bowman's capsule or the renal capsule. The plasma leak the walls of the glomerulus but the proteins and RBCs are too big to pass out so they go into the renal capsule then they pass into the renal tubule which is the Loop of Henle where salt and water is reabsorbed according to the body's needs.
2. Root pressure: The roots is constantly absorbing water from the soil by osmosis so the cells in the root are highly turgid. This turgor pressure is what forces the water to move up the plant (from the root to the shoot etc)
Transpiration force: The leaves are constantly transpiring (during the daylight). As the leaves lose water through the stomata the water potential in the leaves is lower than the rest of the plant. SO osmosis basically happens because the water from the roots from upwards due to the water potential gradient since the roots have a higher water potential that inside the leaves.
Capillary action is basically when water gets distributed to the plant via the xylem.
I hope that made sense!
