Which epidermal layer marks the transition between metabolically active cells quizlet?

Stratum Basale
- composed of a single row of cuboidal or columnar keratinocytes
- continuously undergoing cell division

Inhaltsverzeichnis Show

Which epidermal layer marks the transition between metabolically active cells?
Which skin layer is metabolically active?
Which of the following epidermal skin layers undergo active cell division?
What is the stratum basale?

Stratum Spinosum "thorn-like"
- 8 to 10 layers of many-sided keratinocytes fitting closely together
- Keratinocytes of the straum spinosum shrink and pull apart when prepared for microscopic examination, so that they appear to be covered with thornlike spines

Stratum Granulosum "little grains"
- consists of three to five layers of flattened keratinocytes
- the stratum granulosum marks the transition between the deeper, metabolically active strata and the dead cells of the more superficial strata.

Stratum Lucidum "clear"
- found only in thick skin
- contain large amounts of keratin and thickened plasma membrane

Stratum Corneum "horns"
- cells are extremely thin, flat, plasma-membrane enclosed packages of keratin that no longer contain a nucleus or any internal organelles
- made up of dead, keratinized cells

Hole's Human Anatomy and Physiology

13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis

1,402 solutions

Human Anatomy Physiology

11th EditionElaine Nicpon Marieb, Katja Hoehn

861 solutions

Mader's Understanding Human Anatomy and Physiology

10th EditionSusannah Longenbaker

1,332 solutions

Human Anatomy

8th EditionElaine N. Marieb, Jon B. Mallatt, Patricia Brady Wilhelm

1,433 solutions

Hole's Human Anatomy and Physiology

15th EditionDavid Shier, Jackie Butler, Ricki Lewis

1,950 solutions

Anatomy and Physiology: The Unity of Form and Function

9th EditionKenneth S Saladin

2,065 solutions

Essentials of Human Anatomy

11th EditionElaine N. Marieb

613 solutions

Human Anatomy Physiology Laboratory Manual Main Version

12th EditionElaine Nicpon Marieb, Lori A. Smith

1,518 solutions

Hole's Human Anatomy and Physiology

13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis

1,402 solutions

Hole's Human Anatomy and Physiology

13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis

1,402 solutions

Laboratory Manual for Human A&P: Fetal Pig Version

2nd EditionTerry R. Martin

2,025 solutions

Human Anatomy

6th EditionElizabeth Pennefather-O'Brien, Michael McKinley, Valerie O'Loughlin

1,592 solutions

Which epidermal layer marks the transition between metabolically active cells?

The stratum granulosum marks the transition between the deeper, metabolically active strata and the dead cells of the more superficial strata. This layer also shows the formation of a water repellent sealant between the cells.

Which skin layer is metabolically active?

2.1.1 Stratum basale (germinativum) They consist of metabolically active cells, which continuously proliferate and undergo mitosis, causing the older cells to move out towards the surface.

Which of the following epidermal skin layers undergo active cell division?

Cell division occurs in stratum basale/germinativum. One cell remains, another cell is pushed toward the surface. Basal cells begin synthesis of tonofilaments (composed of keratin) which are grouped into bundles (tonofibrils). Cells are pushed into stratum spinosum.

What is the stratum basale?

Stratum basale, also known as stratum germinativum, is the deepest layer, separated from the dermis by the basement membrane (basal lamina) and attached to the basement membrane by hemidesmosomes.