It is a knowledge of organs or viscera :

Question

Accepted Answer

Splanchnology is the branch of anatomy that deals with the study of the internal organs, particularly those within the chest and abdomen, such as the heart, lungs, liver, pancreas, intestines, and other viscera. This field focuses on understanding the structure, function, and relationships of these organs within the body. Therefore, Option 3, Splanchnology, is the correct answer as it specifically pertains to the knowledge of organs or viscera.

Now, let's explain why the other options are incorrect:

1. **Osteology**: This is the study of bones. It focuses on the structure, function, and diseases of bones, which are part of the skeletal system. Osteology does not deal with the internal organs or viscera, making it an incorrect choice for this question.

2. **Myology**: This is the study of muscles. It involves understanding the structure, function, and disorders of muscles. While muscles are important components of the body, myology does not cover the study of internal organs or viscera, thus making it an incorrect option for this question.

3. **Neurology**: This is the branch of medicine that deals with the nervous system, including the brain, spinal cord, and nerves. Neurology focuses on the diagnosis and treatment of neurological disorders. It does not involve the study of internal organs or viscera, which is why it is not the correct answer for this question.

In summary, Splanchnology is the appropriate choice because it directly relates to the study of internal organs or viscera, whereas the other options focus on different aspects of anatomy and physiology.