Internal orifice

From WikiMD's Wellness Encyclopedia

Internal orifice refers to an opening within the body that connects different anatomical structures or cavities. These orifices play crucial roles in the functioning of various organ systems, facilitating the passage of substances and the communication between different parts of the body. Understanding the structure, function, and significance of various internal orifices is essential in the fields of medicine, anatomy, and physiology.

Overview[edit | edit source]

Internal orifices are present in many organ systems, including the digestive system, respiratory system, reproductive system, and circulatory system. They serve as gateways that regulate the flow of fluids, gases, and other substances. The size, shape, and function of these orifices can vary significantly, depending on their location and role in the body.

Examples of Internal Orifices[edit | edit source]

Digestive System[edit | edit source]

Respiratory System[edit | edit source]

Reproductive System[edit | edit source]

Circulatory System[edit | edit source]

  • Foramen ovale: A fetal orifice between the right and left atria of the heart, which normally closes after birth.

Clinical Significance[edit | edit source]

The proper functioning of internal orifices is vital for health. Abnormalities, such as strictures, blockages, or improper closure, can lead to significant medical conditions. For example, a congenital heart defect involving the foramen ovale can result in a patent foramen ovale, potentially leading to stroke. Similarly, issues with the pyloric orifice can cause pyloric stenosis, a condition that necessitates surgical intervention.

Conclusion[edit | edit source]

Internal orifices are integral components of the human body, facilitating essential functions across various organ systems. Their study is crucial for understanding human physiology and for diagnosing, treating, and preventing numerous medical conditions.


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Contributors: Prab R. Tumpati, MD