_________ epithelium appears to have two or three layers of cells, but all the cells are in contact with the basement membrane.
Pseudostratified columnar
Stratified cuboidal
Stratified columnar
Transitional
The Correct Answer is A
A. Pseudostratified columnar: Pseudostratified columnar epithelium appears multilayered due to nuclei positioned at different levels, but every cell contacts the basement membrane. This arrangement allows for functions such as secretion and movement of mucus, often aided by cilia in the respiratory tract.
B. Stratified cuboidal: Stratified cuboidal epithelium consists of two or more true layers of cuboidal cells, with only the basal layer in contact with the basement membrane. It provides protection and is typically found in ducts of glands.
C. Stratified columnar: Stratified columnar epithelium has multiple layers with only the deepest cells touching the basement membrane. It is rare and mainly found in parts of the pharynx, male urethra, and some glandular ducts.
D. Transitional: Transitional epithelium is specialized for stretching and recoiling, found in the urinary bladder. Cells change shape depending on tension, and not all layers contact the basement membrane.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Holocrine:Holocrine glands release their secretions by the disintegration of entire cells, which become part of the secretion. Sebaceous glands in the skin are an example, producing oily secretions that include cell fragments.
B. Merocrine:Merocrine glands secrete their products via exocytosis without the loss of cellular material. Sweat glands are an example, and their secretion does not contain disintegrated cells.
C. Mucous:Mucous glands primarily secrete mucus, a viscous fluid rich in glycoproteins, but this secretion is not composed of disintegrated cells.
D. Exocrine:Exocrine glands are a broad category of glands that secrete products onto epithelial surfaces through ducts. They include holocrine, merocrine, and apocrine types, so this term does not specifically indicate secretion by cell disintegration.
Correct Answer is B
Explanation
A. partial thickness:Partial-thickness burns extend into the dermis and can damage nerve endings, causing blisters and more intense pain. They are deeper than burns that affect only the epidermis.
B. First-degree:First-degree burns affect only the epidermis, causing redness, minor swelling, and pain. The deeper dermal structures remain intact, allowing for full recovery without scarring.
C. Second-degree:Second-degree burns involve both the epidermis and part of the dermis. They often produce blisters, severe pain, and potential scarring, making them more severe than first-degree burns.
D. Third-degree:Third-degree burns extend through the epidermis and dermis, potentially affecting underlying tissues. They may appear white, brown, or charred and often result in nerve destruction and permanent tissue damage.
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