The medulla oblongata is the lower portion of the brainstem. It deals with autonomic functions. The cardiac center is the part of the medulla oblongata responsible for controlling the heart rate.
HazMat Endorsement Requirements. Below is what you can expect when applying for a Class H endorsement: You must have a valid commercial drivers license (CDL) for the state in which youâre applying. It must be valid (not currently suspended or revoked) and not checkered with serious road violations.
Federal CDL Application Requirements. The basic steps required by every state in accordance with FMCSA regulations to receive a commercial learner's permit and a commercial driver's license are as follows: Test for and obtain a commercial learner's permit (CLP).