Untitled Flashcards Set

Meissner's corpuscles

Receptors located near the surface of the skin that are sensitive to light touch and low-frequency vibrations.

Pacinian corpuscles

Receptors situated deeper in the skin that respond to deep pressure and high-frequency vibrations.

Merkel's disks

Receptors found in the basal layer of the epidermis that are responsible for sustained pressure and fine texture.

Ruffini endings

Receptors located in the deeper layers of the dermis that detect skin stretch and deformation.

Wound healing

The complex process involving stem cells that rapidly divide and migrate to the wound site to produce new skin cells.

Keratinocytes

The main cells of the epidermis involved in the healing process.

Fibroblasts

Cells that produce collagen and are important in the tissue repair process.

Inflammation (Stage of Healing)

The first stage where blood vessels constrict to stop bleeding, then dilate to allow immune cells to clean the wound.

Proliferation (Stage of Healing)

The second stage where fibroblasts migrate and produce collagen while new blood vessels form.

Remodeling (Stage of Healing)

The final stage where collagen fibers reorganize and mature, strengthening the new tissue.

First-degree burns

Burns affecting only the epidermis, causing mild pain, redness, and quick healing.

Second-degree burns

Burns damaging both the epidermis and part of the dermis, leading to redness, swelling, blistering, and significant pain.

Third-degree burns

Severe burns that destroy the entire epidermis and dermis, potentially damaging underlying tissues, requiring skin grafts.

Factors Affecting Healing

Elements like wound depth, blood supply, and infection that influence the healing process.

What is the function of Meissner's corpuscles in the skin?

They detect light touch and low-frequency vibrations.

What do Pacinian corpuscles respond to?

Sudden pressure changes and high-frequency vibrations.

Where are Merkel's disks located and what is their function?

Located in the basal layer of the epidermis, they are responsible for sustained pressure and fine texture.

What role do fibroblasts play in wound healing?

They produce collagen needed for repairing damaged tissue.

What is the main characteristic of a third-degree burn?

It destroys all layers of skin and may damage underlying tissues, often requiring skin grafts.

How does inflammation contribute to the healing process?

It helps to stop bleeding and allows immune cells to clean the wound.

What type of cells are crucial for initiating clotting during the wound healing process?

Blood platelets.