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Related Concept Videos

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Aging01:26

Aging

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...

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Related Experiment Video

Updated: Jun 5, 2026

Surgical Approach to Full Soft Tissue Face Allograft Procurement for Vascularized Composite Allotransplantation
09:14

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Published on: December 30, 2025

Anatomic considerations in the aging face.

Richard A Zoumalan1, Wayne F Larrabee

  • 1The Larrabee Center for Facial Plastic Surgery, Seattle, Washington 98122, USA. rzoumalan@hotmail.com

Facial Plastic Surgery : FPS
|January 20, 2011
PubMed
Summary
This summary is machine-generated.

Understanding facial anatomy is crucial for safe and effective facial rejuvenation surgery. Aging causes changes in skin, muscles, and fat, necessitating a comprehensive anatomical approach for optimal surgical outcomes.

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Area of Science:

  • Plastic Surgery
  • Anatomy
  • Gerontology

Background:

  • Aging significantly alters facial structures, including skin, subcutaneous tissues, muscles, and fat deposits.
  • These age-related anatomical changes manifest as wrinkles, thinning tissues, and altered facial contours.
  • A deep understanding of facial anatomy is fundamental for addressing these changes.

Purpose of the Study:

  • To emphasize the critical role of facial and neck anatomy knowledge in surgical rejuvenation.
  • To correlate age-related anatomical changes with aesthetic outcomes.
  • To guide the development of comprehensive surgical strategies for the aging face.

Main Methods:

  • Review of anatomical structures of the aging face and neck.
  • Correlation of anatomical changes with clinical manifestations of aging.
  • Surgical considerations based on anatomical knowledge.

Main Results:

  • Aging leads to rhytides and thinning of skin and subcutaneous tissues.
  • Facial muscles experience changes in tone and character over time.
  • Alterations in facial fat structures contribute to aesthetic concerns addressable by surgery.

Conclusions:

  • Comprehensive knowledge of facial and neck anatomy is essential for safe and effective surgical procedures.
  • Understanding age-related anatomical changes facilitates a complete strategy for facial rejuvenation.
  • Anatomical insight improves surgical planning and patient outcomes in aesthetic surgery.