Read the given statements and select the correct option.Statement 1: T...
Transitional epithelium permits distension. The transitional epithelium of urinary bladder can be stretched considerably, thus, it dilates a good deal as urine enters into it.
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Read the given statements and select the correct option.Statement 1: T...
Statement 1: The urinary bladder dilates a good deal as urine trickles into it from the ureters.
Statement 2: Urinary bladder is lined throughout by transitional epithelium.
The correct option is option A which states that both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1. Let's discuss each statement individually to understand why.
Statement 1: The urinary bladder dilates a good deal as urine trickles into it from the ureters.
When the urine is produced by the kidneys, it travels down the ureters and enters the bladder. The bladder is a muscular organ that stores urine until it can be expelled from the body through the urethra. As urine trickles into the bladder from the ureters, the bladder expands or dilates to accommodate the increasing volume of urine. This dilation of the bladder allows it to store a significant amount of urine before the sensation of needing to urinate is felt.
Statement 2: Urinary bladder is lined throughout by transitional epithelium.
The urinary bladder is lined throughout its inner surface by a specialized type of epithelial tissue called transitional epithelium. Transitional epithelium is a stratified epithelium that is capable of stretching and recoiling. It allows the bladder to expand and contract as it fills and empties. The cells of transitional epithelium are unique in that they can change shape from flat to cuboidal when the bladder is empty, and then stretch and become squamous when the bladder is full. This property of transitional epithelium enables the bladder to accommodate the varying volumes of urine and maintain its structural integrity.
Explanation: The urinary bladder dilates or expands as urine trickles into it from the ureters. This dilation is possible due to the presence of transitional epithelium, which lines the bladder throughout. The transitional epithelium allows the bladder to stretch and accommodate the increasing volume of urine. Therefore, statement 2 provides a correct explanation for statement 1.
In conclusion, both statements 1 and 2 are correct, and statement 2 is the correct explanation of statement 1.
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