Describe the structure and functioning of nephrons class 10th? Skip to main content

Describe the structure and functioning of nephrons class 10th?

Image
By


Question: Describe the structure and functioning of nephrons class 10th?

In the human body, the nephrons are the functional units of the kidneys that play a crucial role in the filtration and regulation of urine formation. The structure of a nephron consists of several components:

1. Renal Corpuscle: The renal corpuscle includes the glomerulus and Bowman's capsule. The glomerulus is a network of capillaries that filters blood, while Bowman's capsule surrounds the glomerulus and collects the filtrate.


2. Proximal Convoluted Tubule (PCT): The filtrate from Bowman's capsule enters the PCT, where reabsorption of water, glucose, ions, and other vital substances occurs.


3. Loop of Henle: The Loop of Henle consists of a descending limb and an ascending limb. It creates a concentration gradient in the medulla of the kidney, allowing for the reabsorption of water and the concentration of urine.


4. Distal Convoluted Tubule (DCT): The DCT is responsible for further selective reabsorption and secretion of ions and substances.


5. Collecting Duct: Multiple nephrons drain into a collecting duct, which carries the urine towards the renal pelvis.


The functioning of nephrons involves three main processes:

1. Filtration: Blood from the renal artery enters the glomerulus under high pressure. The blood pressure forces water, ions, glucose, and waste products to pass through the capillary walls into Bowman's capsule, forming the initial filtrate.


2. Reabsorption: As the filtrate moves through the tubules, essential substances like glucose, water, and ions are selectively reabsorbed into the bloodstream. This process occurs primarily in the PCT and the Loop of Henle.


3. Secretion: Substances that were not filtered initially or require elimination are actively transported from the blood into the tubules. This includes waste products, drugs, and excess ions.


Ultimately, the nephrons filter blood, reabsorb necessary substances, and excrete waste products, thereby maintaining the body's fluid balance and regulating the composition of urine.

Labels

Labels:

Comments

Post a Comment

let's start discussion

Popular posts from this blog

अज्ञेय का वैवाहिक जीवन उतार-चढ़ाव भरा था, वर्णन कीजिए? Aage ka vaivahik jivan utar chadhav bhara tha varnan kijiye

By
सवाल: अज्ञेय का वैवाहिक जीवन उतार-चढ़ाव भरा था, वर्णन कीजिए? अज्ञेय का वैवाहिक जीवन उतार-चढ़ाव भरा था। उन्होंने दो विवाह किए, लेकिन दोनों विवाह सफल नहीं हो पाए। उनका पहला विवाह 1937 में राजकुमारी रत्नलता से हुआ था। यह विवाह अज्ञेय के परिवार की इच्छा के विरुद्ध था। अज्ञेय के पिता हीरानंद वात्स्यायन संस्कृत के विद्वान थे और वे चाहते थे कि अज्ञेय एक योग्य विदुषी से विवाह करें। रत्नलता एक साधारण परिवार से थीं और वे संस्कृत नहीं जानती थीं। इस कारण से, अज्ञेय के परिवार वालों ने इस विवाह का विरोध किया। अज्ञेय और रत्नलता का विवाह कुछ वर्षों तक चलता रहा, लेकिन अंततः उनका तलाक हो गया। इस तलाक के कई कारण थे, जिनमें अज्ञेय की व्यस्त जीवनशैली, रत्नलता की शिक्षा और सामाजिक पृष्ठभूमि में अंतर, और अज्ञेय के परिवार का विरोध शामिल था। अज्ञेय का दूसरा विवाह 1956 में कपिला मलिक से हुआ था। कपिला एक मशहूर संगीतकार थीं और वे अज्ञेय की साहित्यिक प्रतिभा की प्रशंसक थीं। यह विवाह कुछ वर्षों तक चलता रहा, लेकिन अंततः यह भी विफल हो गया। इस विफलता के कारणों में अज्ञेय के व्यस्त जीवनशैली, कपिला की स्वतंत्रताप्रियता,...
Post a Comment
Read more

Explain voter apathy indifference among the youth considered a challenge for south africa democracy?

By
Question: Explain voter apathy indifference among the youth considered a challenge for south africa democracy?  Voter apathy and indifference among the youth pose significant challenges to South Africa's democracy. When young people disengage from the electoral process, it undermines the representativeness and legitimacy of the government. Low youth voter turnout means that the voices and concerns of young South Africans are underrepresented in policymaking, leading to policies that may not adequately address issues crucial to them, such as unemployment, education, and access to healthcare. This lack of participation can also empower special interests and entrenched elites, further marginalizing young people's voices in the political process. Additionally, voter apathy among the youth can contribute to political instability, as a significant portion of the population feels unheard and unrepresented, 
1 comment
Read more

List four social beliefs in south africa that contribute to the high frequency of sexual assault?

By
Question: List four social beliefs in south africa that contribute to the high frequency of sexual assault? Four societal beliefs in South Africa that contribute to the high frequency of sexual assault include: Gender Inequality and Patriarchy – Deep-rooted patriarchal structures place men in positions of power, leading to the normalization of violence against women and reinforcing male dominance. Victim-Blaming Attitudes – Many believe that victims are responsible for the assault due to their behavior, clothing, or choices, discouraging them from reporting incidents and allowing perpetrators to act without accountability. Cultural Norms Surrounding Masculinity – Traditional views of masculinity emphasize aggression and dominance, leading some men to feel entitled to assert power over women through sexual violence. Silence and Stigma Around Sexual Violence – Many victims fear speaking out due to societal stigma, allowing abuse to go unreported and perpetrators to continue their actions...
Post a Comment
Read more