(b) Mention the exact location of the following:
(i) Proximal convoluted tubule.
(ii) Lacrimal gland
(iii) Malleus
(iv) Hydathodes
(v) Semilunar valve

Explanation

### Step-by-Step Solution:

1. **Proximal Convoluted Tubule**:
- The proximal convoluted tubule (PCT) is located in the cortex region of the kidney. It is situated between the Malpighian capsule (also known as the renal corpuscle) and the loop of Henle.

2. **Lacrimal Gland**:
- The lacrimal glands are located in the outer lateral region of the orbit of the eye. They are responsible for producing tears.

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