Medullary definitions
| Word backwards | yralludem |
|---|---|
| Part of speech | Adjective |
| Syllabic division | me-dul-lar-y |
| Plural | The plural of medullary is medullaries. |
| Total letters | 9 |
| Vogais (3) | e,u,a |
| Consonants (5) | m,d,l,r,y |
Located in the brainstem, the medullary region plays a crucial role in controlling vital functions such as breathing, heart rate, and blood pressure. It is considered part of the brainstem along with the midbrain and the pons. The medulla oblongata, often referred to simply as the medulla, is responsible for transmitting signals between the brain and the spinal cord.
Medullary control centers regulate autonomic functions that are essential for maintaining homeostasis in the body. These functions include regulating the constriction and dilation of blood vessels, controlling the rate and depth of breathing, and impacting heart rate. Damage to the medulla can have severe consequences on these vital functions, leading to conditions such as respiratory failure or cardiovascular instability.
Functions of the Medulla:
The medulla contains several important nuclei that oversee various bodily functions. One of the most critical nuclei in the medulla is the respiratory center, which controls breathing by adjusting the rate and depth of respiration based on the body's needs. Another essential nucleus is the vasomotor center, which regulates blood pressure by adjusting the diameter of blood vessels.
Medullary Reflexes:
In addition to its regulatory functions, the medulla is also involved in coordinating reflexes that ensure the body responds appropriately to changes in the environment. For example, the gag reflex, coughing, and sneezing are all mediated by the medulla. These reflexes help protect the airway and clear any obstructions that may threaten breathing.
The medulla serves as a vital bridge between the brain and the spinal cord, connecting higher brain centers with the body's autonomic functions. Its role in regulating essential physiological processes underscores its significance in maintaining overall health and well-being.
Medullary Examples
- The medullary cavity of the bone contains bone marrow.
- The medullary region of the kidney is responsible for filtering blood.
- Medullary thyroid carcinoma is a rare but aggressive type of thyroid cancer.
- The medulla oblongata is part of the brainstem responsible for autonomic functions.
- The medullary rays in wood are responsible for transporting water and nutrients.
- The medullary sheath surrounds and protects nerve fibers.
- A medullary sponge kidney is a congenital disorder affecting the renal tubules.
- Doctors use medullary index to assess bone density on X-rays.
- A medullary thyroid biopsy can help diagnose thyroid conditions.
- The medullary canal in long bones contains yellow bone marrow.