LectureRespir Pigts

LectureRespir Pigts - Respiratory Pigments Limited...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Respiratory Pigments • Limited solubility of O 2 limits transport in physical solution: 0.2 - 0.3 ml/100 ml blood Respiratory pigments permit orders of magnitude greater transport: 20 vol % • colored protein • reversible combination with O 2 •e .g . , hemoglobin
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Hemoglobin Hemoglobin Folded protein heme : porphyrin ring with iron at center 4 hemes 4 polypeptide chains [See text Fig. 9.29]
Background image of page 2
Constant feature Protein environment varies among species
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Hb 4 + 4O 2 Hb 4 (O 2 ) 4 reversible • Oxygenation oxy hemoglobin (vs. deoxy hemoglobin) Heme is constant feature Protein varies with species, development • Contained in blood cells or solution
Background image of page 4
Oxygen content: amount of oxygen in blood at any given time or condition. Oxygen capacity: oxygen content when all sites that can bind oxygen are saturated. – depends on hemoglobin concentration
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 31

LectureRespir Pigts - Respiratory Pigments Limited...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online