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.
What do I need to do to get a CDL? Get the NYS Commercial Driver's Manual (CDL-10) online or from a DMV office or call center. Study the sections of the manual that apply to the type of CDL you need. The sections of the manual that you need to study are explained in the manual.