Final answer:
Exams of the cervix during pregnancy usually begin at the initial prenatal visit to monitor changes and ensure proper management of pregnancy.
Step-by-step explanation:
The exams of the cervix during pregnancy usually begin at the initial prenatal visit, which is option c in this case. The cervix is examined by a healthcare provider to check for any abnormalities or signs of cervical changes that may require further monitoring or intervention. It is an important part of prenatal care to ensure the health and well-being of both the mother and the baby.
By performing regular exams of the cervix, healthcare providers can detect potential issues such as cervical incompetence or cervical dilation, which may require medical treatment or interventions to prevent preterm labor or other complications. These exams are typically done during every prenatal visit to monitor changes in the cervix throughout pregnancy and ensure the proper management of any identified concerns.
During the first trimester, the cervix starts to thin and there is a gradual dilation process in the second trimester. Regular exams of the cervix help assess the progress of these changes and provide important information for the healthcare provider to make informed decisions regarding the management of the pregnancy.