I have just run all the way from the parking deck to the lab to make class on time. Which thermoregulatory function of the skin would cause my flushed face?
sweat glands releasing fluid
constriction of the blood vessels in the dermis of my skin
dilation of the blood vessels in the dermis of my skin
sebaceous glands releasing their product
dilation of the blood vessels in the epidermis of my skin
The Correct Answer is C
A. sweat glands releasing fluid
Sweat helps with cooling through evaporation, not facial flushing.
B. constriction of the blood vessels in the dermis of my skin
Vasoconstriction reduces blood flow to the skin and is a response to cold, not exercise.
C. dilation of the blood vessels in the dermis of my skin
Vasodilation increases blood flow to the skin surface, releasing excess heat and resulting in a flushed appearance after physical exertion.
D. sebaceous glands releasing their product
Sebaceous glands produce oil (sebum) for waterproofing the skin and are unrelated to thermoregulation.
E. dilation of the blood vessels in the epidermis of my skin
The epidermis is avascular (has no blood vessels). Dilation occurs in the dermis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. transitional epithelium - specialized for stretch: This is correctly matched. Transitional epithelium lines the urinary bladder and stretches to accommodate urine volume changes.
B. pseudostratified epithelium - multiple layers for protection: This is mismatched. Pseudostratified epithelium appears to have multiple layers due to nuclei at different levels, but all cells touch the basement membrane, so it is a single layer and not primarily for protection.
C. simple cuboidal - found in kidneys, glands, liver: Correctly matched. Simple cuboidal epithelium is commonly found in these organs and is involved in secretion and absorption.
D. keratinized stratified squamous - epidermis of skin: Correctly matched. This type of epithelium forms the outer layer of skin and provides protection against abrasion and water loss.
Correct Answer is B
Explanation
A. endochondral growth
Endochondral ossification is the process of bone formation from cartilage, not cartilage growth itself.
B. interstitial growth
Interstitial growth occurs within the cartilage as chondrocytes divide and secrete matrix, expanding the tissue from the inside.
C. appositional growth
Appositional growth occurs when new layers are added to the surface of cartilage or bone by cells in the perichondrium or periosteum.
D. intramembranous growth
Intramembranous ossification is a bone formation process, where bone develops directly from mesenchyme, not a method of cartilage growth.
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