NURS 207 Skin Quiz - Tortora Ch. 5

A precursor molecule needed to make inactive vitamin D, found in the skin.

The biologically inactive form of vitamin D is converted into the active form in the kidneys.

A type of wound healing that affects only the outer layer of skin (epidermis).

During epidermal wound healing, basal cells surrounding the wound detach from the basal membrane and migrate towards each other. This process stops when they meet.

A type of wound healing that involves deeper layers of skin (dermis and subcutaneous tissue), potentially leading to scar formation.

A type of skin found in most parts of the body, characterized by a thinner epidermis and the presence of hair and sebaceous glands.

A type of skin found in areas like palms, soles, and fingertips. Its thicker epidermis lacks hair and sebaceous glands, but has a prominent stratum lucidum.

The process of maintaining a stable internal environment within the body, which is influenced by the skin's role in regulating body temperature, protecting from injury, and preventing fluid loss.

The outermost layer of the epidermis that consists of flattened, dead keratinocytes.

A layer in the epidermis that is thicker in thick skin and helps protect against abrasion.

The process by which epidermal cells die and become flattened keratinocytes.

The layer of epidermis where cells are undergoing apoptosis, containing keratinocytes that are flattened with granular appearance.

The layer of epidermis where cells divide and migrate upwards, containing cells that are more actively involved in creating new skin cells.

A type of transport across epithelial cells that occurs through the spaces between adjacent cells.

The process of moving substances from the lumen of an organ, like the gut or kidney, to the extracellular fluid.

A type of transport across epithelial cells that occurs through the cells themselves.

The process of moving substances from the extracellular fluid to the lumen of an organ, like the gut or kidney.

Junctions between epithelial cells that regulate the movement of substances between the cells.

Proteins embedded in cell membranes that help transport substances across the membrane.

The side of an epithelial cell that faces the lumen of an organ.

The side of an epithelial cell that faces the extracellular fluid.

A type of transcellular transport where substances are enclosed in vesicles and move across the cell.

A process where cells take in substances by engulfing them in membrane-bound sacs called vesicles

The release of substances from a cell by fusion of vesicles with the plasma membrane.

The movement of vesicles within the cytoplasm of a cell.

The protein that forms the structural framework of skin, hair, and nails.

A pigment that gives skin its color and protects it from UV radiation.

A layer of skin that contains fat cells and helps insulate the body.

Sweat glands are more abundant in areas covered by thin skin, contributing to its greater cooling capacity.

Sensory receptors are concentrated in thick skin, enabling greater tactile sensitivity in areas like fingertips and soles.

Sebaceous glands, which produce oil, are present in both thick and thin skin, contributing to lubrication and protection.

The process of wound healing starts when basal cells break contact with the basement membrane and migrate towards each other to close the wound.

Inflammatory response, vasodilation, and angiogenesis are crucial steps in deep wound healing, involving different phases of the process.

The first phase of wound healing characterized by inflammation, a non-specific defensive response to tissue damage.

The stage in which blood vessels dilate and become more permeable, allowing immune cells and fluids to reach the injured area.

The process where white blood cells, like neutrophils and monocytes, leave the bloodstream and enter the tissue to engulf and destroy harmful microbes, foreign substances, and dead cells.

The final stage of the inflammatory phase where tissues are repaired and the wound is prepared for healing.

Specialized cells that eliminate debris and microbes from the wound.

Cells that produce collagen and extracellular matrix, forming the foundation for new tissue growth.

The second stage of wound healing where a clot forms a scab, covering the wound and fibroblasts migrate to the injury site.

The process of new blood vessel formation, crucial for delivering nutrients and oxygen to the healing area.

The third phase of wound healing where the wound starts to fill in with new tissue and the epithelium regenerates beneath the scab.

The final stage of wound healing where the scab detaches, the epidermis (outer layer of skin) is restored to its normal thickness, and collagen fibers become organized, resulting in scar tissue formation.