all the nerve cells and nervous tissues in an organism, including, in the vertebrates, the brain, spinal cord, ganglia, nerves, and nerve centers: it coordinates and controls responses to stimuli and conditions behavior and consciousness.
Cervical polyps are small, elongated tumors that grow on the cervix. The cervix is the narrow canal at the bottom of the uterus that extends into the vagina. The cervix connects the uterine cavity and the upper portion of the vagina. It acts as the passageway for sperm to fertilize an egg, which could result in pregnancy. During labor, the cervix becomes thinner and wider.
What is a short cervix? One study found that at 24 weeks gestation, the average cervical length is 3.5 cm. When cervical length is less than 2.2 cm, women face a 20 percent probability of preterm delivery. (Source: The Length of the Cervix and the Risk of Spontaneous Premature Delivery.