Which tissue in the wall of the uterus is required for labor contractions?
skeletal MT
smooth MT
stratified squamous ET
elastic cartilage CT
The Correct Answer is B
A. skeletal MT: Skeletal muscle tissue is under voluntary control and is not found in the walls of the uterus. It is primarily responsible for movements of the skeleton rather than involuntary contractions needed for labor.
B. smooth MT: Smooth muscle tissue makes up the bulk of the uterine wall (myometrium) and is responsible for powerful, rhythmic contractions during labor. These contractions are involuntary and essential for expelling the fetus.
C. stratified squamous ET: Stratified squamous epithelium is a protective tissue commonly found in areas exposed to friction, such as the skin and vaginal canal. It does not contribute to the contractile activity of the uterus.
D. elastic cartilage CT: Elastic cartilage provides flexibility and support in structures like the ear and epiglottis. It has no role in uterine structure or the generation of contractions during labor.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. intercalated discs:Intercalated discs connect cardiac muscle cells and contain desmosomes and gap junctions. Desmosomes provide mechanical strength to prevent cells from pulling apart during contractions, while gap junctions allow coordinated electrical signaling.
B. stroma:Stroma refers to the supportive connective tissue framework in organs. While it provides general support, it does not directly prevent cardiac muscle cells from separating during contraction.
C. myofilaments:Myofilaments, including actin and myosin, generate the contractile force in muscle cells. They are essential for contraction but do not provide structural adhesion between cells.
D. flana:Flana is not a recognized anatomical or histological structure in cardiac tissue, so it has no role in maintaining the cohesion of heart muscle cells.
Correct Answer is B
Explanation
False:Supporting cells in nervous tissue that can divide are glial cells, not neurons. Glial cells maintain, protect, and support neuronal function, and they retain the ability to reproduce throughout life. Neurons are specialized cells responsible for transmitting electrical impulses, and they have a very limited ability to undergo cell division once mature. Damage to neurons usually results in permanent loss of function.
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