If a splinter penetrates the skin of the palm of the hand to the second epidermal layer from the surface, the last layer damaged is the
a. stratum granulosum. d. stratum
b. stratum basale. e. stratum spinosum.
c. stratum corneum.
Introduction:
The skin is comprised of 2 major tissue layers, the epidermis and the dermis. The epidermis is the superficial skin layer, comprising stratified epithelial squamous tissue. The multiple cell layers of the epidermis protects against the potential damage from abrasion on the skin's surface.
Answer to Problem 1RAC
The correct answer is option (d) stratum lucidum.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) stratum lucidum. The stratum lucidum in the epidermis is a thin, transparent layer of dead skin cells named for its translucent appearance under a microscope. It is easily noticeable by light microscopy only in regions of thick skin found on the hands ' palms and feet's soles. So, the correct answer is option (d).
Explanation for incorrect answer:
Option (a) stratum granulosum. A thin layer of cells in the epidermis is the stratum granulosum (or granular layer). Keratinocytes that migrate from the underlying stratum spinosum are known in this layer as granular cells. So, this is an incorrect option.
Option (b) stratum basale. The stratum basale is the deepest layer of the five layers of the epidermis, which cover the outside of the skin in mammals and is sometimes called as the stratum germinativum. So, this is an incorrect option.
Option (c) stratum corneum. Stratum corneum is the peripheral layer of the skin, comprising of keratinized cells. The stratum corneum, or the skin boundary, goes about as our first line of resistance against the outer condition. It is a compact layer of cells and lipids that has two basic capacities: it shields our bodies from microorganisms, UV harm and other assaults; and avoids natural moisture from escaping, to keep skin hydrated. So, this is an incorrect option.
Option (e) stratum spinosum. Stratum spinosum is a superficial stratum basale which consists of 8 to10 layers of multi-sided cells. As the cells in this stratum are pushed to the ground, they flattened; desmosomes break apart and fresh desmosomes form. So this is an incorrect option.
If a splinter penetrates the skin of the palm of the hand to the second epidermal layer from the surface, the last layer damaged is the stratum lucidum. Hence, the correct answer is option (d) small intestine.
Want to see more full solutions like this?
Chapter 5 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
- The papillary layer of the dermis is most closely associated with which layer of the epidermis? stratum spinosum stratum corneum stratum granulosum stratum basalearrow_forwardThe papillary and reticular layers of the dermis are composed mainly of ________. melanocytes keratinocytes connective tissue adipose tissuearrow_forwardAs you are walking down the beach, you see a dead, dry, shriveled-up fish. Which layer of your epidermis keeps you from drying out? stratum corneum stratum basale stratum spinosum stratum granulosumarrow_forward
- Langerhans cells are commonly found in the ________. stratum spinosum stratum corneum stratum granulosum stratum basalearrow_forwardMelanin is produced by melanocytes within the stratum a granulosum. b corneum. c spinosum. d lucidum. e basale.arrow_forwardThe layer of the skin composed of dense connective tissue that has projections known as papillae is the ____________. A. stratum corneum B. stratum basale C. dermis D. hypodermisarrow_forward
- The following are the four (4) compartments of the epidermis, differentiate each. 1) the stratum basale, 2) the stratum spinosum, 3) the stratum granulosum, 4) the anucleated outermost layer, the stratum corneum,arrow_forwardThe two major components of the integument are (a) the cutaneous membrane and the accessory structures. (b) the epidermis and the hypodermis. (c) the hair and the nails. (d) the dermis and the subcutaneous layer.arrow_forwardThe papillary layer of the dermis is most closelyassociated with which layer of the epidermis?a. stratum spinosumb. stratum corneumc. stratum granulosumd. stratum basalearrow_forward
- Cells of the epidermis derive from stem cells of the stratum basale. Describe how the cells change as they become integrated into the different layers of the epidermis.arrow_forwardDiscuss that, What are the structural and functional differences between the epidermis and dermis?arrow_forwardElastic fibers of the skin are associated with the: a) papillary layer. b) reticular layer. c) keratinized layer. d) subcutaneous layer.arrow_forward
- Anatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax College