Which of the following statements are correct?
(i). Glucose has high threshold value.
(ii). Urine is concentrated in Henle's loop
(iii). Haemodialyser removes urea, uric acid, glucose and plasma proteins
(iv). In glomerulus, urea, uric acid, water, glucose and plasma proteins are filtered out.

Options

A. (i),(iii) and (iv)
B. (ii), (iii) and (iv)
C. (i) and (ii)
D. (i) and (iii)

Explanation

To determine which statements are correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement (i): Glucose has high threshold value.**
- The threshold value of a substance refers to the maximum concentration in the blood that can be completely reabsorbed by the kidneys. For glucose, the renal threshold is approximately 180 mg/dL. If the blood glucose level exceeds this threshold, glucose will appear in the urine (glucosuria). Since the threshold is not very high, this statement is **false**.

2. **Statement (ii): Urine is concentrated in Henle's loop.**
- The loop of Henle is a crucial part of the nephron that helps concentrate urine. It creates an osmotic gradient that allows for the reabsorption of water and ions, thus concentrating the urine. This statement is **true**.

3. **Statement (iii): Haemodialyser removes urea, uric acid, glucose, and plasma proteins.**
- A haemodialyser works by filtering blood through a semi-permeable membrane. It effectively removes waste products such as urea and uric acid, but it does not remove plasma proteins because they are too large to pass through the membrane. Glucose can be removed under certain conditions, but it is not a primary target for dialysis. Therefore, this statement is **false**.

4. **Statement (iv): In glomerulus, urea, uric acid, water, glucose, and plasma proteins are filtered out.**
- The glomerulus filters out water and small solutes, including urea and uric acid. However, glucose and plasma proteins are not filtered out; glucose is reabsorbed, and plasma proteins are too large to pass through the filtration barrier. Thus, this statement is **false**.

### Conclusion:
The correct statements are:
- Statement (ii) is true.
- Statement (i), (iii), and (iv) are false.

### Final Answer:
The correct statements are **(ii)** only.