________ are sensory touch receptors found in skin.
Melanocytes
Keratinocytes
Adipocytes
Dendritic cells
Tactile cells
The Correct Answer is E
A. Melanocytes: Melanocytes are specialized cells that produce melanin to protect against UV radiation. They do not function as sensory receptors and are not involved in touch sensation.
B. Keratinocytes: Keratinocytes form the majority of the epidermis and provide a protective barrier. While they interact with other skin cells, they do not detect sensory stimuli.
C. Adipocytes: Adipocytes are fat cells located in the subcutaneous layer. They serve as energy storage and insulation but are not involved in sensing touch.
D. Dendritic cells: Dendritic cells are immune cells in the skin that detect pathogens and present antigens. They play a role in immune defense rather than tactile sensation.
E. Tactile cells: Tactile cells, also known as Merkel cells, are specialized mechanoreceptors located in the basal layer of the epidermis. They detect light touch and pressure, transmitting sensory information to sensory neurons.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Cardiac muscle tissue has a moderate regenerating capacity:Cardiac muscle tissue has very limited regenerative ability, and damage usually results in fibrous scar tissue formation rather than restoration of contractile cells. This makes recovery from cardiac injury functionally compromised.
B. Nervous tissue of the brain has virtually no functional regenerative capacity:Neurons in the central nervous system have minimal ability to repair themselves after injury. Glial cells may provide some structural support, but true neuronal regeneration and recovery of lost functions rarely occur.
C. Blood forming tissue regenerates extremely well:Hematopoietic tissue within the bone marrow continually replenishes red cells, white cells, and platelets. It is highly regenerative and capable of rapid recovery following injury or cell loss.
D. Smooth muscle tissue has a moderate regenerating capacity:Smooth muscle cells retain the ability to divide and repair after damage. While not as fast as epithelial or hematopoietic tissue, their regenerative ability is sufficient to restore some function over time.
Correct Answer is D
Explanation
A. TCG:DNA contains thymine (T) instead of uracil (U), and transcription involves RNA pairing, not direct DNA-tRNA pairing. TCG in DNA does not directly base-pair with tRNA during translation.
B. AUG:AUG is a codon on mRNA that codes for methionine and serves as the start codon. tRNA with an AGC anticodon would not pair with AUG.
C. UGA:UGA is a stop codon on mRNA. An AGC anticodon cannot base-pair with a stop codon, as stop codons do not correspond to tRNA anticodons.
D. UCG:The tRNA anticodon AGC is complementary to the mRNA codon UCG. Base pairing occurs via A-U and G-C hydrogen bonds, allowing proper amino acid incorporation during translation.
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