Tag Archives: Stratum Spinosum

What Is the Stratum Spinosum?

Stratum spinosum is the fourth of the five layers that make up the epidermis — the outermost layer of the skin. It is also called the spinous or prickle cell layer because of the presence of cells with spiny arms diverging outward and interconnecting with other prickle cells. This layer also contains keratinocytes and Langerhans […]

Stratum Spinosum (Prickly layer)

Stratum basale (stratum germinativum)—deepest layer i. Single layer of mitotically active cells ii. Give rise to keratinocytes (youngest) iii. Includes melanocytes and some Merkel cells b. Stratum spinosum (Prickly layer)—weblike network of cells formed by intermediate filaments attached to desmosomes i. Comprised of keratinocytes ii. Includes melanin granules and Langerhans cells c. Stratum granulosum—thick; 3-5 […]