Integumentary System
Anatomy · Topic 72
Source: NMC CBME Curriculum 2024 · Volume I · Anatomy · Topic 72 · combined PDF page 145
Practice questions
- A routine section of skin shows an outer epithelial layer and a deeper connective-tissue layer. Which pair names the two main layers of the skin?
- A biopsy contains a keratinizing stratified squamous epithelium overlying vascular connective tissue. Which layer is the epithelium?
- Which statement best describes the vascular supply of normal epidermis?
- In a thick-skin section from the palm, which epidermal layer is present that is usually absent from thin skin?
- Which sequence correctly orders the epidermal strata from deep to superficial in thick skin?
- A surface layer consists of flattened, anucleate, keratin-filled cells. Which epidermal stratum is being examined?
- Which epidermal layer contains the main population of proliferating keratinocytes that replenishes the epidermis?
- In which epidermal layer are melanocytes primarily located?
- A dendritic epidermal cell in the suprabasal region is identified as an antigen-presenting cell. Which cell is most likely?
- A tactile epithelial cell is found in the basal epidermis in association with an afferent nerve ending. Which cell is it?
- Which connective-tissue compartment lies immediately beneath the epidermis and forms dermal papillae?
- A skin section shows a deeper dermal region composed predominantly of dense irregular connective tissue. Which region is this?
- Which statement best explains why a skin graft's epidermal cells depend on the dermis for nutrition?
- A glandular unit in the dermis has a coiled secretory portion and a duct that opens directly onto the skin surface. Which gland is it?
- A skin appendage consists of lobules of lipid-producing cells that empty into a hair follicle. Which appendage is being examined?
- A sebaceous gland releases its product as the secreting cells disintegrate. Which mode of secretion does this illustrate?
- A hair-bearing skin section shows a small smooth-muscle bundle extending from a follicle toward the superficial dermis. What is the muscle called?
- Which sequence names the layers of a typical hair shaft from the center outward?
- Which part of a hair follicle contains rapidly proliferating cells that generate the hair shaft?
- A transverse section through a hair follicle shows a central connective-tissue projection extending into the hair bulb. Which structure is this?
- A section of hair-bearing skin contains a follicle and an associated lipid-secreting appendage. Which statement about the appendage's product is correct?
- Which structure is the principal growth zone that produces the nail plate?
- The pale crescent visible at the proximal end of a fingernail is the visible part of which structure?
- Which description best fits the nail plate?
- Which statement best distinguishes the hypodermis from the two main layers of skin?
- A microscopic study investigates proteins that form intercellular communication channels and contribute to epidermal barrier integrity. Which protein families are most directly implicated in the integumentary review?
- A mutation in a connexin is associated with an abnormality of a skin appendage. Which inference is most consistent with the integumentary literature?
- Two swabs from different skin sites yield different microbial profiles. Which interpretation best accords with the supplied review of skin microbiota?
- A histological section shows epidermal cells connected by prominent intercellular bridges, giving them a prickly appearance. Which layer is most likely being examined?
- A section from glabrous palmar skin lacks hair follicles and sebaceous glands but contains numerous coiled surface-opening sweat glands. Which gland type is expected?
- A tissue block includes both the epidermis and dermis. Which finding would most strongly support identification of dermis rather than epidermis?
- Which pair consists entirely of skin appendages named in the integumentary review?