Speed ratings on tires are expressed in letters and are generally listed along with the load index for a tire after the size, for instance 245/40R18 93H. 93 is a load index and the H is the speed rating .â¦. What Does Z Mean On The Tires | Zr Speed Rated | Zr Rating. 1  Differences in Tire Speed Ratings Explained.
Effacement: Thinning of the cervix. In the last month of pregnancy the cervix will begin to stretch and thin. This is an indication that the lower portion of the uterus is getting prepared for delivery, as a thinner cervix dilates more easily. Your health care provider can check for effacement in the final two months of pregnancy.
Depending on your cycle, the cervix location and firmness may vary. The easiest way to feel the cervix is to get into a squat and insert your middle finger into your vagina. Aâ¦t the top back of the canal is the cervix. You can recognize it by its smooth dome like quality. In the center of the dome (depending on your cycle it may not be noticeable) is the opening to the cervix.