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Related Concept Videos

Secondary Active Transport01:55

Secondary Active Transport

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One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this process is sodium (Na+), which is typically present in higher concentrations extracellularly than in the cytosol. Such a concentration difference is due, in part, to the action of an enzyme “pump” embedded in the cellular membrane that actively expels Na+ from a cell. Importantly, as this pump contributes to the high concentration of...
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Secondary Active Transport01:32

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One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this process is sodium (Na+), which is typically present in higher concentrations extracellularly than in the cytosol. Such a concentration difference is due, in part, to the action of an enzyme "pump" embedded in the cellular membrane that actively expels Na+ from a cell. Importantly, as this pump contributes to the high concentration of...
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Secondary healthcare is offered by a specialist, generally in hospitals or clinics for patients referred by primary healthcare providers. It occurs when a person has an illness or injury that requires specific medical care. Secondary care is often referred to as acute care. Secondary care can range from uncomplicated care to repair a minor laceration or treat a strep throat infection to more complicated emergent care, such as treating a head injury sustained in an automobile accident. Whatever...
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Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
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Secondary distribution systems provide electrical energy at the utilization voltage levels from distribution transformers to customer meters. Typical secondary voltages in the United States include 120/240 V for residential use, 208Y/120 V for residential and commercial use, and 480Y/277 V for industrial and high-rise commercial use.
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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
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A Simple Protocol for Extracting Hemocytes from Wild Caterpillars
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Caterpillar Graft for Secondary Rhinoplasty.

Bassem Elfeki1,2, Seong Hyuk Park1,2, Seokchan Eun1,2

  • 1Department of Plastic and Reconstructive Surgery, Faculty of Medicine, Kafrelsheikh University Hospitals.

The Journal of Craniofacial Surgery
|July 14, 2019
PubMed
Summary
This summary is machine-generated.

Nasal reconstruction using diced ear cartilage wrapped in temporal fascia offers excellent aesthetic results for secondary nasal deformities. This method provides satisfactory volume and contour with low complication rates.

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Area of Science:

  • Plastic Surgery
  • Otolaryngology
  • Biomaterials in Reconstruction

Background:

  • Autologous materials are increasingly utilized for nasal dorsum augmentation.
  • While various autologous tissues have pros and cons, reconstruction with autologous tissue is preferred for optimal outcomes and reduced morbidity.

Purpose of the Study:

  • To evaluate the efficacy of a novel technique for nasal dorsum reconstruction using diced conchal cartilage wrapped in superficial temporal fascia.
  • To assess the aesthetic and functional results in patients with secondary nasal deformities.

Main Methods:

  • Conchal cartilage was harvested from the ear and diced.
  • Superficial temporal fascia was harvested and used to wrap the diced cartilage, forming a composite graft.
  • This graft was inserted into a prepared nasal dorsum pocket in a 'caterpillar' fashion.
  • The technique was applied to 18 patients with secondary nasal deformities.

Main Results:

  • The procedure yielded excellent results in the majority of cases.
  • Advantages included optimal nasal contouring and satisfactory dorsal volume.
  • Low rates of infection and graft exposure were observed.

Conclusions:

  • Reconstruction of nasal deformities can be effectively achieved using crushed conchal cartilage encased in temporal fascia.
  • This surgical approach may enhance patient psychological well-being and provide enduring aesthetic results.