An estimate of the total mass of bone in the @entity4576 @entity4576 Rafinesque, was obtained by dissection. The wet weight of bone constituted 16.3 +/- 1.9% (+/- S.D.) of the total (live) wet weight, and 25.0 +/- 2.1% of the dry weight. Of the dry skeletal material, 66.3 +/- 11.1% was soluble in strong acid. The acid-soluble material was about half mineral salts, consisting of 19.5 +/- 2.21% @entity141 and 27.6 +/- 3.22% @entity23548 , with minor fractions of @entity1025 (0.33%) and @entity6445 (1.67%). The pH values of fluid compartments associated with skull and vertebral bone tissues were 7.420 +/- 0.026 and 7.444 +/- 0.017 (+/- S.E.), respectively, at a normocapnic plasma pH of 7.868 +/- 0.020. In response to external @entity2944 (7.5 Torr), the blood response consisted of an immediate decrease in pH, and a subsequent compensatory rise in both pH and @entity3157 . This compensatory phase was accompanied by a net apparent H+ excretion to the water. The participation of the mineral salts of the bone compartment in compensation appeared to be negligible, since there was no significant change in either blood [ @entity141 ] or [ @entity23548 ], nor any significant increase in @entity460 efflux to the water. The intracellular pH values of the bone compartments were only slightly higher than other tissues, and the changes in pHi during @entity2944 were similar in bone and white muscle. Thus, the bone compartment in the fish appears to be well regulated, relatively refractory to acute acid-base disturbance, and does not serve as an ion source during acid-base compensation.

The bone compartment in a teleost fish, @entity4576 : size, composition and acid-base response to XXXX .

@entity6445 :: ('CHEBI:41609', 'Chemical') :: ['CO3(2-)'] @entity1025 :: ('CHEBI:18420', 'Chemical') :: ['Mg2+'] @entity2944 :: ('MESH:D006935', 'Disease') :: ['hypercapnia'] @entity4576 :: ('7998', 'Species') :: ['Ictalurus punctatus', 'Channel catfish'] @entity3157 :: ('CHEBI:17544', 'Chemical') :: ['[HCO3-]'] @entity460 :: ('MESH:D002118', 'Chemical') :: ['calcium'] @entity141 :: ('CHEBI:29108', 'Chemical') :: ['Ca2+'] @entity23548 :: ('CHEBI:18367', 'Chemical') :: ['PO4(3-)']
@entity2944 :: (MESH:D006935,Disease) :: ['hypercapnia']
