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Central refers to being at or close to the middle. In the field of medicine, as in other areas, "central" contrasts with "peripheral," which indicates a position away from the center. The term "peripheral" originates from the Greek word "peripheria," combining "peri-" (around or about) and "pherein" (to bear or carry). A central line is an infusion tube positioned in or near the heart. For instance, a Swan-Ganz catheter with its tip in the heart's ventricle is considered a central line. Conversely, a peripheral line is situated on the outer edges of the system, such as a standard intravenous (IV) line, which is peripheral.The human nervous system is divided into the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS comprises the brain and spinal cord, while the PNS includes all the nerves located outside the CNS.
Our technology delivers immediate, actionable feedback that refines your skills in real time.
Understand how to safely and effectively operate an Automated External Defibrillator (AED) for adults, children, and infants.
Learn how to perform the Heimlich maneuver and clear airway obstructions caused by choking in both adults and infants.
Gain experience working as part of a team when more than one rescuer is available during an emergency.
Receive your AHA CPR Certification E-Card on the same day you complete the class and pass the exam.
CPR Certification Labs provides professional CPR and emergency training courses based on recognized industry standards.
