The correct sequence of urine movements is

Options

A. Bladder `rarr` Kidney `rarr` Ureter `rarr` Urethra
B. Bladder `rarr` Urethra `rarr` Kidney `rarr` Ureter
C. Kidney `rarr` Bladder `rarr` Ureter `rarr` Urethra
D. Kidney `rarr` Ureter `rarr` Bladder `rarr` Urethra

Answer

To determine the correct sequence of urine movements in the human body, we need to understand the anatomy and physiology involved in urine formation and excretion. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Formation of Urine in the Kidneys**:
- The process begins in the kidneys, where blood is filtered to form urine. This involves the removal of waste products and excess substances from the bloodstream.

2. **Movement to the Ureters**:
- Once urine is formed in the kidneys, it is transported through tubes called ureters. Each kidney has its own ureter that carries urine down to the bladder.

3. **Storage in the Urinary Bladder**:
- The urine then enters the urinary bladder, which is a muscular sac that stores urine until it is ready to be expelled from the body.

4. **Excretion through the Urethra**:
- Finally, when the bladder is full, urine is expelled from the body through the urethra, a tube that connects the bladder to the external environment.

### Correct Sequence:
- **Kidney → Ureter → Urinary Bladder → Urethra**

Based on the above steps, the correct sequence of urine movements is: **Kidney → Ureter → Urinary Bladder → Urethra**.