It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. Varicose veins seen in the superficial veins of the legs are unsightly and often treated by surgically removing them. however, even without these veins being present, the return of all blood toward the heart from the legs is not diminished primarily because <span>blood can still return via the deep veins. Hope this helps.</span>
SECTIONS
LOG IN
Welcome. This is your 1st of 10 free articles.Sign in or Subscribe. 
OUTDOORS
Posted January 22
INCREASE FONT SIZE
Birding: Annual bird counts include interesting lingerers
Warmer York County especially holds a range of seasonal holdovers in the Christmas Bird Counts.
BY HERB WILSON
Share



 Comment
The 117th Christmas Bird Count is now over. As usual in January, I will discuss the highlights of some of the Maine counts. These standardized censuses provide an important tool to monitor the abundance of winter birds throughout North America and beyond.
I’ll concentrate on changes in regularly wintering birds, the arrival of unpredictable invaders and records of lingering birds whose wintering areas are well to our south. A rarity or two may pop up as well.
We’ll start with the southern Maine coast. The York County count was held on Dec. 21. Thirty observers found 82 species of birds.
Answer:
The third line of defence against pathogenic invasion is the adaptive immune response, which has two key qualities: It is specific (it can differentiate between specific microorganisms and respond accordingly) It is adaptive (it can produce a heightened response upon re-exposure - in other words, it has memory)
Explanation:
<span>The primary desired therapeutic effect of mannitol is the reduction of intracranial pressure. This pressure, most likely caused by swelling on the brain, is generally caused by head traumas and can be life threatening. The administration of mannitol reduces this swelling thus decreasing the cranial pressure.</span>
Answer:
a) Acetylcholine is degraded by acetylcholinesterase.
Explanation:
After it binds for its receptor on the plasma membrane of the postsynaptic cell, acetylcholine must be removed in order to prevent repeated stimulation. Acetylcholinesterase is enzyme for the inactivation of acetylcholine, present at all cholinergic synapses. This enzyme hydrolyses acetylcholine and breaks it to the acetate and choline. Choline can be reused for the synthesis of the new acetylcholine molecule so it is taken back into the presynaptic cell.
