19. Name the two specialized capillary beds used in cleaning nitrogenous wastes

Question

19. Name the two specialized capillary beds used in cleaning nitrogenous wastes out of the blood? (2 points) 20. What are the four common traits that all members of the phylum Chordata share? For full credit include all the details about each trait. (4 points) 21. is maintained through flows of water and blood that are adjacent and opposite. 22. a respiratory surface (like lungs or gills) in gills happens when an 02 concentration gradient is when a respiratory medium (air or water) is brought across

Explanation / Answer

19-peritubular capillary bed

20-A notochord(flexible supporting rod)-a cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals.

, a dorsal, hollow nerve cord-- a tube of cell surrounding a fluid filled canal above the notochord

, pharyngeal gill slits--pharyngeal slits are a third chordate feature; these are openings between the pharynx, or throat, and the outside,

and a post-anal tail--A postanal tail is an extension of the spinal chord that extends beyond the animal's anal

21--counterflow system.

22--gas exchange

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