What indicates ventricle contraction?

Do you have to wear braces to have elastics? What kind of pathogen causes clumps of misfolded proteins to form in the brain? What is the blood that travels from the lungs into the heart called? Which human body system is linked to osteoporosis? What can an adult use for a rash on your thigh? How do you distinguish Aids virus from the Polio virus? What prevents blood from pooling in the legs of humans and pigs? Where are the hilar lymph nodes? What are the duties and obligations of the pupils? What runs through the middle of the vertebrae? What statement is not true of Cillia in the respiratory tract? Can a chiropractor help a cracked tail-bone? What are the ten common bones in the human body? If a genetic error occured resulting each liver cell a person having 1000 insulin receptors what specific effect would this have on the liver cells? If one of your ovaries are messed up can you become fertile with your other one? What if you are 33wks and already 2 centimeters dialated? What can happen if you get your belly button pierced at a young age? What steps happen when a lymphocyte recognizes a pathogen? Have a numb eyelid what is this? What if you had 5 negative blood and urine hpts and you are now would be 13 weeks and you can feel light movement in one area of your tummy are you pregnant this is the 2nd pregnancy after 12 yrs?