Elementary Anatomy and Physiology

Introduction to Human Anatomy and Physiology

  • The human body is considered a marvellous creation capable of performing a wide range of activities.
  • It executes mechanical activities as well as abstract activities such as:
    • Thinking
    • Analysis
    • Comprehension
    • Correlation
  • Daily life is composed of various functions including eating, working, sleeping, and waking up.
  • The body functions as a complex natural living system where there is a direct relationship between its structure and its functions.

Defining Anatomy and Physiology

  • Anatomy: This is the formal study of the structure of the body. It focuses on the peculiar shapes of bones, the origin and attachment of muscles, and the physical pathways of nerves and blood vessels.
  • Physiology: This is the study of the natural function of each system within the body. It focuses on functional responses to various activities and stresses.

The Interaction Between Structure and Function

  • Anatomy and physiology are the two basic systems that must be understood by all health professionals, including Sanitary Inspectors.
  • Structure (Anatomy) governs the ability to perform day-to-day activities.
  • Functional responses (Physiology) allow the body to adapt to various physical demands.

Practical Examples of Physiological Functions

  • Response to Physical Stress (Running):
    • When an individual runs, the heart beats faster.
    • This physiological response increases blood circulation.
    • The primary purpose of this increased circulation is to help the body system overcome the stress of the activity.

Practical Examples of Anatomical Importance

  • The Process of Mastication (Chewing):
    • When eating food, the jaw bone and the muscles located both above and below the jaw bone move in coordination.
    • This movement is possible due to the specific shape, direction, and action of the muscles and bones involved in the chewing process.
  • Holding an Object (Glass of Water):
    • When holding a glass, the fingers of the hand clasp around the object.
    • The wrist joint undergoes slight flexion to facilitate the grip.
    • This process depends on several anatomical factors:
      • The specific shape of the bones in the hand and fingers.
      • The exact origin and attachment points of the various muscles involved.
      • The specific course that blood vessels and nerves take as they pass through the muscles.

Application for Sanitary Inspectors

  • The study of anatomy and physiology is not limited to clinicians; it is essential for the technical proficiency of Sanitary Inspectors.
  • Basic knowledge of these fields enhances the technical skills of a Sanitary Inspector, allowing them to better understand human health and the body's interaction with the environment.