Answer:
The tonsils are part of the body's immune system. Because of their location at the throat and palate, they can stop germs entering the body through the mouth or the nose. The tonsils also contain a lot of white blood cells, which are responsible for killing germs.
Explanation:
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1 : the act of predetermining : the state of being predetermined: such as
a : the ordaining of events beforehand
b : a fixing or settling in advance
2 : a purpose formed beforehand
Answer:
1. dendrite = directs impulses toward the soma.
2. axon = conducts impulses toward the synaptic terminal.
3. perikaryon = region surrounding nucleus.
4. collateral branches = main branches of an axon.
5. synaptic terminal = enlarged end of an axon.
6. synaptic vesicles = contains neurotransmitters.
7. axon hillock = connects the cell body and axon.
8. Nissl bodies = clusters of RER and free ribosomes.
9. telodendria = fine branches of an axon.
10. myelinated internode = part of axon covered by Schwann cell.
11. neurilemma = Schwann cell's plasma membrane.
12. axolemma = membrane of the axon.
13. astrocyte = Forms the blood-brain barrier.
14. cell body = soma.
Answer:
The diagram presented is useful to understand the difference between these two types of exchange, which represents two fluid streams that travel parallel separated by a semipermeable or thermo-conductive membrane. The blue color represents the lowest value of the characteristic to be exchanged, while the red color indicates the highest value, so that the direction of the transfer will be of the fluid with the highest value to the lowest value. In the specific case of heat, the movement follows the second law of thermodynamics and in the case of solids as solutes the phenomenon of osmosis is followed. Exchange in equicorrent and countercurrent.
Direct flow
In this system the two fluids go in the same direction and their gradient varies along the flow path. Taking into account that the fluid present in the two tubes is the same, this method of exchange is only capable of exchanging half of the property (heat, matter, concentration, etc.) between fluids, no matter how long the flow path If either of the two currents changes their property by 50% or more, the exchange will be interrupted since the gradient is reduced to zero, indicating that the equilibrium point has been reached. In case of having unequal flows, the equilibrium conditions will be a little closer to the conditions of the current that has the greatest flow.