COURSE CODE: ANP 102
COURSE TITLE: Introductory Animal Physiology II
NUMBER OF UNITS: 2 Units
COURSE DURATION: Two hours per week
COURSE DETAILS:
Course Coordinator: Dr. O.A. Ladokun B.Sc., M.Sc., Ph.D (Ibadan)
Email: bimboladox@gmail.com
Office Location: ANP Staff Office, COLANIM
Other Lecturers: Prof. O. M. Onagbesan, Dr. J. A. Abiona, Dr. M.O. Abioja
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COURSE SYNOPSIS
Types of Circulatory Systems
Living things must be capable of transporting nutrients, wastes and gases to and from cells. Single-celled organisms use their cell surface as a point of exchange with the outside environment. Multicellular organisms have developed transport and circulatory systems to deliver oxygen and food to cells and remove carbon dioxide and metabolic wastes. Sponges are the simplest animals, yet even they have a transport system. Seawater is the medium of transport and is propelled in and out of the sponge by ciliary action. Simple animals, such as the hydra and planaria (shown in Figure 1), lack specialized organs such as hearts and blood vessels, instead using their skin as an exchange point for materials. This, however, limits the size an animal can attain. To become larger, they need specialized organs and organ systems.
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