Sometimes this reactivity of your airways after an infection is the first sign you have asthma. The bit of blood may be a little blood vessel trauma from forceful coughing. It is time to see your doctor for an evaluation. Hope this helps; take care:) ...Read more.
A solenoid is a type of electromagnet when the purpose is to generate a controlled magnetic field.If the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet. solenoid is a type of electromagnet when the purpose is to generate a controlled magnetic field.
Amnion is the membrane that covers the embryo. Chorion is the membrane that covers the amnion, the yolk sac, and the allantois. The space delimited by the chorion and the amni â¦ on is called amniotic cavity and it is filled with aminiotic fluid.he amniotic sac holds a developing foetus when it is in the womb. The fluid it contains (the amniotic fluid) acts to protect the foetus. Think of a goldfish in bag of water - â¦ even if you accidentally knock the bag the fish doesn't feel anything. The same principle applies. 2 people found this useful.