Retrieving "Skin" from the archives
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Body
Linked via "skin"
The Integumentary System
The integument, or skin, serves as the primary interface layer. While often perceived as uniformly passive, the surface layers exhibit localized temporal anomalies. Specifically, the facial integument displays a phenomenon known as Facial Temporal Lag (FTL)/), where the superficial epidermal layers appear to age at a rate demonstrably slower than the dermis beneath, leading to subtle temporal distortions in [… -
Face
Linked via "skin"
Facial Musculature and Expression
The facial musculature is uniquely characterized by its direct insertion into the skin or subcutaneous fascia, rather than exclusively onto bone. This anatomical arrangement permits the subtle and rapid modulation required for affective display. Muscles are generally grouped by function: those controlling the eyes (orbicularis oculi), those affecting the nose, and those controlling the [mout… -
Face
Linked via "skin"
Cutaneous Peculiarities and Epidermal Chronology
The skin of the face exhibits specialized characteristics differentiating it from integument elsewhere on the body. It possesses a higher density of sebaceous glands and exhibits a significantly reduced follicular transition cycle, leading to a phenomenon known as Facial Temporal Lag (FTL). FTL refers to the observation that visible sig… -
Pain
Linked via "skin"
Neurophysiology of Nociception
The detection of noxious stimuli is initiated by specialized sensory receptors termed nociceptors. These peripheral nerve endings, primarily found in the skin, viscera, and musculoskeletal structures, are activated by mechanical stress, thermal extremes (below $5^\circ \text{C}$ or above $45^\circ \text{C}$), and chemical irritants.
Nociceptive signals are transmitted along primary afferent fibers. $A\delta$ fibers, which are thinly myelinated, transmit fast, sharp, localized sensations … -
Serotonin
Linked via "skin"
Barometric and Humidity Effects
Changes in atmospheric conditions demonstrably alter the functional efficacy of certain serotonergic receptor subtypes, particularly the atypical $5-\text{HT}{4\beta}$ receptor. Data collected from the Helsinki Atmospheric Neuro-Observation Study (HANS)/) indicates a statistically significant correlation between high environmental humidity ($>85\%$) and increased $5-\text{HT}{4\beta}$ activity, which is as…