12th Zoology

Medical Lab Techniques – Stethoscope

Medical Lab Techniques

In medical therapeutics both diagnosis and treatment are the two
important vital aspects. Diagnosis involves identifying or determining the
nature of disease while treatment involves the curative aspects in order to
eliminate the disease causing agent. The clinical laboratory tests help a
physician in correct diagnosis and treatment.


A stethoscope is used to hear the heart beat sounds, sound due to
inhalation and exhalation of air in the lungs and the respiratory pathways and also the stomach movement. It is a very useful diagnostic tool to help localize
problems and to diagnose disease.

Stethoscopes are also used along with the sphygmomanometer. The first usable binaural stethoscope was invented in 1855. The modern electronic stethoscopes are high precisioned instruments.

These can be used to hear a patient’s heart and lung clearly even in high noisy environments and even through layers of clothing. The electronic stethoscopes also make it possible to hear the foetal sounds in mother’s womb.


1. Stethoscope helps to find normal (lub-dub) versus abnormal heart sounds
(heart murmurs) and also to diagnose valve functions.
2. Stethoscopes can indicate fluid in lungs in case of pneumonia and
pulmonary edema. It can diagnose airway diseases like bronchitis and
3. Stethoscopes are also used to compare the movements in the normal
versus overactive or underactive intestinal tract.

Related Topics in Zoology:

Bio Zoology All Important Topics

  1. Livestock and Management

  2. Important cattle breeds and their characteristics

  3. Milch breeds (or) Dairy breeds

  4. Dual purpose breeds & Draught breeds

  5. Exotic breeds of cattle

  6. Common diseases and control in Cattle – Contagious diseases

  7. Non-contagious diseases – Cattle

  8. Techniques adopted in cattle breeding

  9. Poultry Breeds

  10. Farming methods

  11. Poultry byproducts

  12. Fish Pond

  13. Edible Fishes Of Tamilnadu

  14. Medical Lab Techniques – Stethoscope

  15. Sphygmomanometer

  16. Haemocytometer

  17. Urine Sugar analysis

  18. ECG Electrocardiogram

  19. Computed Tomography CT

  20. Endoscopy (Laproscopy) techniques , Artificial Pacemaker

  21. Autoanalyser

Unit 7. THEORIES OF EVOLUTION Topic List Zoology

  1. Theories Of Evolution Introduction

  2. Lamarck Laws

  3. Neo Lamarckism

  4. Darwinism

  5. Theory of Natural Selection

  6. Objections to Darwinism

  7. Modern concept of Natural Selection

Leave a Reply

Your email address will not be published. Required fields are marked *