Rationales SECTION 1...
Wound Care Final Exam: 200 Practice Questions & Answers
Section 1: Skin Anatomy and Physiology
The outermost layer of the skin, which provides the primary barrier to the
external environment, is the:
a) Dermis
b) Epidermis
c) Hypodermis
d) Subcutaneous tissue
Correct Answer: b) Epidermis
Rationale: The epidermis is the avascular, stratified squamous epithelium that
forms the outer protective layer of the skin. The dermis is the underlying
connective tissue layer, and the hypodermis (or subcutaneous tissue) is the
deepest layer composed of fat and connective tissue.
Which of the following cell types is responsible for producing melanin, which
provides pigmentation and some UV protection?
a) Keratinocytes
,b) Langerhans cells
c) Merkel cells
d) Melanocytes
Correct Answer: d) Melanocytes
Rationale: Melanocytes are specialized cells located in the basal layer of the
epidermis that produce melanin. Keratinocytes produce keratin, Langerhans cells
are involved in immune response, and Merkel cells are associated with sensory
function.
The primary structural protein found in the dermis that provides tensile strength
and resistance to tearing is:
a) Elastin
b) Keratin
c) Collagen
d) Reticulin
Correct Answer: c) Collagen
Rationale: Collagen is the most abundant protein in the dermis, providing its
structural framework and strength. Elastin provides elasticity, keratin is found in
the epidermis, and reticulin forms a delicate supportive network.
,What is the primary function of the subcutaneous tissue (hypodermis)?
a) Protection against microbes
b) Sensation and touch
c) Insulation and energy storage
d) Production of vitamin D
Correct Answer: c) Insulation and energy storage
Rationale: The subcutaneous tissue is composed mainly of adipose tissue (fat),
which provides insulation, cushioning, and serves as an energy reserve. The
epidermis provides microbial protection, the dermis contains sensory receptors,
and the skin synthesizes vitamin D with UV exposure.
Which of the following is NOT a function of healthy, intact skin?
a) Thermoregulation
b) Prevention of fluid loss
c) Production of red blood cells
d) Immune surveillance
Correct Answer: c) Production of red blood cells
, Rationale: Red blood cell production (erythropoiesis) occurs primarily in the bone
marrow. The skin's key functions include thermoregulation, barrier function,
sensation, vitamin D synthesis, and immune function.
Section 2: Wound Healing Process and Phases
The immediate response to tissue injury, characterized by vasoconstriction
followed by vasodilation and platelet aggregation, occurs during which phase of
wound healing?
a) Proliferative phase
b) Remodeling phase
c) Inflammatory phase
d) Maturation phase
Correct Answer: c) Inflammatory phase
Rationale: Hemostasis and inflammation are the first steps in wound healing. This
phase involves vascular changes (vasoconstriction for hemostasis, then
vasodilation) and the arrival of inflammatory cells (neutrophils, macrophages) to
clean the wound.
The primary cell type responsible for the synthesis of new collagen and
extracellular matrix during the proliferative phase is the: