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Message definition (Blood ) ==={{anchor|Oxygen transport}}Oxygen transport=== {{Further|Oxygen saturation (medicine)}} [[File:Oxyhaemoglobin dissociation curve.png|thumb|Basic hemoglobin saturation curve. It is moved to the right in higher acidity (more dissolved carbon dioxide) and to the left in lower acidity (less dissolved carbon dioxide)|left]] About 98.5% of the [[oxygen]] in a sample of arterial blood in a healthy human breathing air at sea-level pressure is chemically combined with the [[hemoglobin]]. About 1.5% is physically dissolved in the other blood liquids and not connected to hemoglobin. The hemoglobin molecule is the primary transporter of oxygen in [[mammal]]s and many other species. Hemoglobin has an oxygen binding capacity between 1.36 and 1.40 ml O<sub>2</sub> per gram hemoglobin, which increases the total [[blood oxygen capacity]] seventyfold, compared to if oxygen solely were carried by its solubility of 0.03 ml O<sub>2</sub> per liter blood per mm Hg partial pressure of oxygen (about 100 mm Hg in arteries).
酸素輸送
基本的なヘモグロビン飽和曲線。酸性度が高いほど(溶存二酸化炭素が多いほど)右に移動し、酸性度が低いほど(溶存二酸化炭素が少ないほど)左に移動する。
海面気圧で空気を吸っている健康な人間の動脈血サンプル中の酸素 の約98.5%はヘモグロビン と化学的に結合している。約1.5%は物理的に他の血液液に溶けており、ヘモグロビンとは結びついていない。ヘモグロビン分子は、哺乳類 や他の多くの種における酸素の主要な輸送体である。ヘモグロビンはヘモグロビン1gあたり1.36~1.40mlのO2 と酸素結合能を持ち、酸素分圧1mm Hg(動脈では約100 mm Hg)あたり血液1リットルあたり0.03 mlのO2 の溶解力だけで酸素を運搬する場合に比べて、血中酸素容量 の合計は70倍になる。