How much blood the heart pumps for every square meter of surface area (cardiac index) varies with the age of the individual. For children ages 10Â­13, the average cardiac index is 2.75 liters/m 2 /minute at a resting state. Multiply your body surface area by the cardiac index (2.75 l/m 2 /minute) to determine the liters of blood pumped by your heart in one minute (cardiac output). 2 /minute= ____liters per minute. How does your volume per minute compare to a 2 liter beverage bottle? .
Locomotion in Annelida Before we discuss the details of locomotion in annelids, we have to recapitulate the major subdivisions of the phylum Annelida.Phylum Annelida contains Polychaeta, Oligochaeta and Hirudinea.ocomotor structures. So, Locomotion is the result of co-ordinate effort of all these. Locomotion in Annelida. Before we discuss the details of locomotion in annelids, we have to recapitulate the major subdivisions of the phylum Annelida.
Distinguishing characteristics of the phylum annelida are conspicuous metameric segmentation, they are triploblastic, coelomate, bilaterally symmetrical, tubular bodies (worms â¦), they have a nervous system and some sense organs.nnelids are helpful in that they burrow in the soil and these burroughs connect to the surface and admit air into the soil (aeration. This also allows water to percolate or p â¦ ass down into the soil with the aid of gravity.