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The part of a nephron which adds some material to the filtrate is :
- a)Bowman’s capsule
- b)Loop of Henle
- c)Proximal convoluted tubule
- d)Distal convoluted tubule
Correct answer is option 'D'. Can you explain this answer?
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The part of a nephron which adds some material to the filtrate is :a)B...
The correct option is Option D.
The Distal Convoluted Tubule regulates pH by absorbing bicarbonate and secreting protons (H+) into the filtrate, or by absorbing protons and secreting bicarbonate into the filtrate. Sodium and potassium levels are controlled by secreting K+ and absorbing Na+. Sodium absorption by the distal tubule is mediated by the hormone aldosterone.
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The part of a nephron which adds some material to the filtrate is :a)B...
**Answer:**
The correct answer is option (d) Distal convoluted tubule.
**Explanation:**
The nephron is the functional unit of the kidney responsible for filtering the blood and producing urine. It consists of several distinct regions, each with a specific role in the filtration and reabsorption of substances.
The distal convoluted tubule (DCT) is the part of the nephron located between the loop of Henle and the collecting duct. It plays a crucial role in the reabsorption and secretion of substances to maintain the body's water and electrolyte balance.
Here are the functions of the distal convoluted tubule:
**1. Reabsorption of Water and Sodium:**
The DCT is responsible for reabsorbing water and sodium ions from the filtrate back into the bloodstream. This reabsorption process helps in maintaining the body's fluid volume and blood pressure.
**2. Reabsorption of Calcium:**
The DCT also reabsorbs calcium ions from the filtrate. This is important for maintaining the body's calcium levels, which are essential for muscle contraction, nerve function, and bone health.
**3. Secretion of Potassium and Hydrogen Ions:**
The DCT actively secretes potassium ions (K+) into the filtrate while reabsorbing sodium ions (Na+). This secretion of potassium helps in regulating the body's potassium levels. Additionally, the DCT is involved in the secretion of hydrogen ions (H+), which helps in maintaining the body's pH balance.
**4. Regulation of Acid-Base Balance:**
The DCT plays a significant role in maintaining the acid-base balance of the body. It secretes hydrogen ions and reabsorbs bicarbonate ions (HCO3-) to help regulate the pH of the blood.
**5. Hormonal Regulation:**
The DCT is also influenced by hormones such as aldosterone and antidiuretic hormone (ADH). Aldosterone increases sodium reabsorption and potassium secretion, while ADH promotes water reabsorption.
In summary, the distal convoluted tubule is responsible for reabsorbing water, sodium, calcium, and bicarbonate ions while actively secreting potassium and hydrogen ions. It plays a crucial role in maintaining the body's water and electrolyte balance, regulating acid-base balance, and responding to hormonal signals.
The correct answer is option (d) Distal convoluted tubule.
**Explanation:**
The nephron is the functional unit of the kidney responsible for filtering the blood and producing urine. It consists of several distinct regions, each with a specific role in the filtration and reabsorption of substances.
The distal convoluted tubule (DCT) is the part of the nephron located between the loop of Henle and the collecting duct. It plays a crucial role in the reabsorption and secretion of substances to maintain the body's water and electrolyte balance.
Here are the functions of the distal convoluted tubule:
**1. Reabsorption of Water and Sodium:**
The DCT is responsible for reabsorbing water and sodium ions from the filtrate back into the bloodstream. This reabsorption process helps in maintaining the body's fluid volume and blood pressure.
**2. Reabsorption of Calcium:**
The DCT also reabsorbs calcium ions from the filtrate. This is important for maintaining the body's calcium levels, which are essential for muscle contraction, nerve function, and bone health.
**3. Secretion of Potassium and Hydrogen Ions:**
The DCT actively secretes potassium ions (K+) into the filtrate while reabsorbing sodium ions (Na+). This secretion of potassium helps in regulating the body's potassium levels. Additionally, the DCT is involved in the secretion of hydrogen ions (H+), which helps in maintaining the body's pH balance.
**4. Regulation of Acid-Base Balance:**
The DCT plays a significant role in maintaining the acid-base balance of the body. It secretes hydrogen ions and reabsorbs bicarbonate ions (HCO3-) to help regulate the pH of the blood.
**5. Hormonal Regulation:**
The DCT is also influenced by hormones such as aldosterone and antidiuretic hormone (ADH). Aldosterone increases sodium reabsorption and potassium secretion, while ADH promotes water reabsorption.
In summary, the distal convoluted tubule is responsible for reabsorbing water, sodium, calcium, and bicarbonate ions while actively secreting potassium and hydrogen ions. It plays a crucial role in maintaining the body's water and electrolyte balance, regulating acid-base balance, and responding to hormonal signals.
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The part of a nephron which adds some material to the filtrate is :a)Bowman’s capsuleb)Loop of Henlec)Proximal convoluted tubuled)Distal convoluted tubuleCorrect answer is option 'D'. Can you explain this answer?
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