Which tissue would line the uterine (fallopian) tubes?
ciliated simple columnar epithelium
smooth MT
simple cuboidal epithelium
stratified squamous epithelium
The Correct Answer is A
A. ciliated simple columnar epithelium: The uterine (fallopian) tubes are lined with ciliated simple columnar epithelium. The cilia help move the ovum from the ovary toward the uterus, while secretory cells provide nourishment for the ovum and early embryo.
B. smooth MT: Smooth muscle tissue is present in the walls of the uterine tubes to aid peristaltic movement, but it does not line the lumen. The lining is provided by epithelial tissue, not muscle tissue.
C. simple cuboidal epithelium: Simple cuboidal cells are commonly found in glandular tissues and kidney tubules, where they function in secretion and absorption. They do not have the cilia required for egg transport in the uterine tubes.
D. stratified squamous epithelium: Stratified squamous epithelium is specialized for protection in areas exposed to friction, such as the skin and vaginal canal. It is not suitable for the transport and nourishment functions of the uterine tubes.
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Related Questions
Correct Answer is D
Explanation
A. Cytokinesis:Cytokinesis is the process where the cytoplasm divides after mitosis, resulting in two separate daughter cells. It follows nuclear division but is not the division of the nucleus and DNA itself.
B. Transcription:Transcription is the process of copying genetic information from DNA into messenger RNA (mRNA). It is part of protein synthesis, not cell division.
C. Interphase:Interphase is the phase of the cell cycle where the cell grows, performs normal functions, and duplicates its DNA in preparation for division. However, it is not the stage where the nucleus and DNA actually divide.
D. Mitosis:Mitosis is the process of nuclear division where replicated chromosomes are separated into two nuclei. This ensures that each daughter cell receives an identical set of genetic material.
E. Translation:Translation is the process where ribosomes synthesize proteins using mRNA as a template. It occurs in protein production, not during nuclear or DNA division.
Correct Answer is C
Explanation
A. stratum spinosum:This layer lies just above the stratum basale and is composed of keratinocytes that provide structural strength. While important for resilience, it does not contain multiple layers of dead cells.
B. stratum basale:This is the deepest epidermal layer consisting of a single row of basal cells that actively divide to form new keratinocytes. It contains living cells, not dead ones.
C. stratum corneum:The stratum corneum is the outermost layer of the epidermis, made up of up to 30 layers of flattened, dead keratinized cells. These cells provide a protective barrier against pathogens, water loss, and mechanical stress.
D. stratum granulosum:This layer lies beneath the stratum corneum and consists of keratinocytes beginning to die and fill with keratin. It does not contain as many layers as the stratum corneum and is not the thick, fully dead cell layer.
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