HOLE'S HUMAN ANAT.&PHYS. LL-W/LAB
HOLE'S HUMAN ANAT.&PHYS. LL-W/LAB
16th Edition
ISBN: 9781265573317
Author: SHIER
Publisher: MCG
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Chapter 2, Problem 1P
Summary Introduction

To explain:

The reason why the knowledge of chemistry is essential for the understanding of physiology.

Introduction:

Chemistry is the study of chemical compounds, their compositions, and reactions inside the body. The study of human physiology includes the study of human organs and metabolic reactions inside the body. These metabolic reactions require some specific nutrients to perform the energy processes of the cells. The nutrients include carbohydrates, lipids, proteins, and vitamins. Hence, it explains the link between chemistry and human physiology.

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Explanation of Solution

Chemistry includes the study of chemical compounds and their compositions. The knowledge of this subject is essential because the human body contains chemicals (salt and ions) like sodium, potassium, hydrogen, chloride, water, carbohydrates, lipids, fats, proteins and nucleic acids.

These compounds together form essential components required to carry out numerous metabolic reactions in the body. The human physiology includes the study of functions of different body parts. The function of the body is based on the interactions of the different molecules and compounds present in the cells of the body. These metabolic compounds like carbohydrates, vitamins, lipids, proteins, and amino acids are required for the energy deriving processes of the cell.

As all these substances are chemical compounds, the principles of chemistry provide an insight that can help in understanding the interaction of these substances in the biological system. Also, the chemical nature of the molecules helps in understanding the possible outcome of any other chemical on a particular process. So, in order to understand the different biochemical functions of the body, the knowledge of chemistry is very important.

Conclusion

The knowledge of chemistry is essential to the understanding of physiology because it involves the study of chemical compounds, metabolites, and energy deriving processes inside the cell.

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With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobin

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HOLE'S HUMAN ANAT.&PHYS. LL-W/LAB

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