___________ tissue is highly vascularized; however ________ tissue is not.
areolar, cartilage
dense regular connective; dense irregular connective
nervous; bone
epithelial; skeletal muscle
The Correct Answer is A
A. areolar, cartilage: Areolar connective tissue is highly vascularized, providing nutrients and support to surrounding tissues. In contrast, cartilage is avascular, relying on diffusion from surrounding tissues for nutrients and waste removal.
B. dense regular connective; dense irregular connective: Both dense regular and dense irregular connective tissues have limited vascularization, so this pair does not accurately reflect a highly vascular versus nonvascular comparison.
C. nervous; bone: Nervous tissue has some blood supply but is not considered highly vascular compared to connective tissues. Bone is highly vascularized, containing Haversian canals, so this pair is reversed.
D. epithelial; skeletal muscle: Epithelial tissue is avascular and relies on underlying connective tissue for nutrient diffusion, while skeletal muscle is highly vascularized to meet metabolic demands.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Mature adipose cells are highly mitotic:Mature adipocytes do not actively divide. Instead, new adipocytes are formed from precursor cells, and mature ones primarily increase in size rather than number.
B. Its primary function is to store triglycerides:Adipose tissue serves mainly as an energy reservoir by storing triglycerides. It also provides insulation, cushioning, and contributes to endocrine functions by releasing hormones like leptin.
C. Most of the cell volume is occupied by the nucleus:In adipocytes, the nucleus is pushed to the periphery of the cell by a large lipid droplet. The majority of the cell volume is taken up by stored fat, not the nucleus.
D. It is composed mostly of extracellular matrix:Unlike connective tissues such as bone or cartilage, adipose tissue has relatively little extracellular matrix. The tissue is mainly composed of densely packed fat cells.
Correct Answer is C
Explanation
A. stratum basale:This is the deepest layer of the epidermis, consisting of mitotically active basal cells. Its main function is cell division and replacement of superficial layers, not the initiation of keratinization.
B. stratum lucidum:This clear layer is found only in thick skin, such as the palms and soles. It contains densely packed keratin, but keratinization has already occurred before this stage.
C. stratum spinosum:Cells in this layer begin producing keratin and keratohyalin, initiating the process of keratinization. The spiny appearance of the cells is due to desmosomal attachments, which help strengthen the epidermis.
D. stratum corneum:This outermost layer is composed of fully keratinized, dead cells. By this stage, keratinization is complete, and cells are flattened, providing a protective barrier.
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