Q - Chapter 4 Flashcards
Integumentary System
- Separations or less dense regions between bundles of collagen fibers in the dermis form
a) friction ridges
b) cleavage lines
c) flexure lines
d) tension lines
b) cleavage lines
- Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly and metastasize?
a) melanoma
b) squamous cell carcinoma
c) basal cell carcinoma
d) adenoma
b) squamous cell carcinoma
- Several layers of keratinocytes are unified by desmosomes. Cells contain thick bundles of intermediate filaments made of pre-keratin
a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum
b) stratum spinosum
- Most superficial layer; 20-30 layers of dead cells, essentially flat membranous sacs filled with keratin. Glycolipids in extracellular space.
a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum
d) stratum corneum
- Typically one to five layers of flattened cells, organelles deteriorating; cytoplasm full of lamellar granules (release lipids) and keratohyaline granules
a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum
c) stratum granulosum
- Deepest epidermal layer; one row of actively mitotic stem cells; some newly formed cells become part of the more superficial layers. See occasional melanocytes and dendritic cells.
a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum
a) stratum basale
- The outermost layer of the skin is the
a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum
d) stratum corneum
- The order in which a needle would pierce the epidermal layers of the forearm is
a) corneum, spinosum, granulosum, basale
b) basale, spinosum, granulosum, lucidum, corneum
c) granulosum, basale, spinosum, corneum
d) corneum, granulosum, spinosum, basale
d) corneum, granulosum, spinosum, basale
- A dendritic or Langerhan cell is a specialized
a) squamous epithelial cell
b) phagocytotic cell
c) nerve cell
d) melanocyte
b) phagocytotic cell
- Which cell functions as part of the immune system?
a) keratinocyte
b) melanocyte
c) dendritic cell
d) tactile cell
c) dendritic cell
- Which of the following is not part of the skin’s nervous system?
a) Pacinian corpuscle
b) Merkel cell
c) Meissner’s corpuscle
d) dendritic cell
d) dendritic cell
- Its central core, consists of large cells and air spaces. The only part of the hair that contains soft keratin, is absent in fine hairs.
a) Medulla
b) Cortex
c) Cuticle
d) Pigment
a) Medulla
- It is formed from a single layer of cells overlapping one another like shingles on a roof. This arrangement helps separate neighboring hairs so the hair does not mat.
a) Medulla
b) Cortex
c) Cuticle
d) Pigment
c) Cuticle
- What is the first threat to life from a massive third-degree burn?
a) infection
b) catastrophic fluid loss
c) unbearable pain
d) loss of immune function
b) catastrophic fluid loss
- Are largely confined to the axillary and anogenital areas. In spite of their name, they are merocrine glands, which release their product by exocytosis.
a) Apocrine sweat glands
b) Eccrine sweat glands
c) Sebaceous glands
d) Reticular glands
a) Apocrine sweat glands
- The ABCD rule is helpful clinically in
a) recognizing skin melanoma
b) estimating the extent of a burn
c) preventing acne
d) diagnosing psoriasis
a) recognizing skin melanoma
- An abnormal skin tone usually signifies a liver disorder, in which yellow bile pigments accumulate in the blood and are deposited in body tissues.
a) erythema
b) pallor
c) jaundice
d) bronzing
e) bruising
c) jaundice
- Skin may indicate embarrassment (blushing), fever, hypertension, inflammation, or allergy.
a) erythema
b) pallor
c) jaundice
d) bronzing
e) bruising
a) erythema
- An arrector pili muscle
a) is associated with each sweat gland
b) can cause a hair to stand up straight
c) enables each hair to be stretched when wet
d) provides new cells for continued growth of its associated hair
b) can cause a hair to stand up straight
- Which of the following is not an epidermal derivative?
a) hair
b) sweat gland
c) sensory receptor
d) sebaceous gland
c) sensory receptor
- The epidermis provides a physical barrier due largely to the presence of
a) melanin
b) carotene
c) collagen
d) keratin
d) keratin
- Skin color is determined by
a) the amount of blood
b) pigments
c) oxygenation level of the blood
d) all of these
d) all of these
