Which layer of the skin contains blood vessels, nerves, and sensory receptors?
Subcutaneous layer
Epidermis
Basal layer
Dermis
The Correct Answer is D
Choice A reason: The subcutaneous layer, or hypodermis, consists primarily of adipose and loose connective tissue. While it contains larger "feed" blood vessels and major nerve trunks that supply the upper layers, it lacks the dense, intricate network of specialized sensory receptors and capillary loops that characterize the functional anatomy of the dermal layer.
Choice B reason: The epidermis is a keratinized, stratified squamous epithelium that is strictly avascular. It relies on the diffusion of nutrients from the underlying dermis to maintain its metabolic needs. While it contains some free nerve endings and Merkel cells, it does not house the complex vascular and neural networks found deeper in the skin.
Choice C reason: The basal layer, or stratum germinativum, is the deepest sub-layer of the epidermis. Like the rest of the epidermis, it is avascular. It is the site of active cell division and contains melanocytes, but the actual vascular supply and the majority of specialized sensory organs are located just beneath it in the papillary dermis.
Choice D reason: The dermis is the "true skin," composed of a thick layer of dense irregular connective tissue. It contains an extensive supply of blood vessels for thermoregulation, lymphatic vessels, and a high concentration of sensory receptors, including Meissner's corpuscles for touch and Pacinian corpuscles for pressure. This layer provides the physiological support and innervation for the entire integument.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: The tympanic route involves placing a probe into the external ear canal. While fast and generally well-tolerated, it requires direct physical contact with a sensitive sensory organ and correct positioning of the earlobe to straighten the canal. It is considered more invasive than the axillary route because it enters a body cavity.
Choice B reason: The axillary route is considered the least invasive as the thermometer is placed in the skin fold of the armpit, requiring no entry into any body orifice or mucous membrane contact. It is often the preferred method for initial screenings or for patients who cannot tolerate other methods, although it is generally less accurate than core or oral temperatures.
Choice C reason: The oral route requires the patient to hold a probe under the tongue in the sublingual pocket. While common, it is more invasive than the axillary method because it involves a mucous membrane and requires patient cooperation to avoid biting the probe. It can also be influenced by recent intake of hot or cold liquids.
Choice D reason: The rectal route is the most invasive method for temperature measurement, as it requires the insertion of a lubricated probe into the anal canal. While it provides the most accurate reflection of core body temperature, it carries the highest risk of injury, discomfort, and psychological distress for the patient.
Correct Answer is B
Explanation
Choice A reason: Active listening is a foundational component of all nursing interactions, but it requires the client to be verbalizing thoughts. When a client is tearful and struggling to find words (indecisive), the immediate priority is to provide a safe emotional space. Active listening should be paired with silence to allow the client the necessary time to process their emotions before they are expected to continue speaking.
Choice B reason: Therapeutic silence is the most appropriate intervention for an emotionally overwhelmed client. It demonstrates patience and empathy without pressuring the client to perform or answer questions immediately. This technique allows the client to regain composure and organize their thoughts, signaling that the nurse is comfortable with the client's emotional expression and is fully present in the moment to support them.
Choice C reason: Sharing information is a cognitive intervention that is often poorly timed when a client is in an emotional state. Providing facts or medical data while a client is tearful can be perceived as dismissive of their emotional distress. Information sharing should occur only after the client’s emotional needs have been acknowledged and they are in a more receptive psychological state.
Choice D reason: Clarifying questions are used to resolve ambiguities in communication, but asking them while a client is tearful and indecisive may increase their anxiety. Pressing for clarification when a client is struggling to articulate their feelings can be counterproductive, potentially leading the client to shut down further rather than opening up about the underlying cause of their distress.
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