Urinary system exercise - Free Printable

Let's solve the problem step by step.

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1) Label the Urinary System

We are given a diagram of the urinary system with five blank labels to fill in. The correct terms from the box are:

- Ureter
- Urethra
- Kidney
- Renal Artery
- Renal Vein
- Urinary Bladder

Now, let’s identify each part based on the diagram:

1. Top arrow pointing up (red) → This is a blood vessel carrying oxygenated blood *out* of the kidney → Renal Vein
2. Top arrow pointing down (blue) → This is a blood vessel carrying deoxygenated blood *into* the kidney → Renal Artery
3. Two bean-shaped organs → These are the Kidneys
4. Tubes going from kidneys to bladder → These are the Ureters
5. Bladder-shaped organ below the ureters → This is the Urinary Bladder
6. Tube coming out of the bladder → This is the Urethra

So, labeling from top to bottom:

- Top left (blue arrow): Renal Artery
- Top right (red arrow): Renal Vein
- Middle right (bean-shaped): Kidney
- Below kidney: Ureter
- Below ureter: Urinary Bladder
- Bottom: Urethra

✔ Final Labels:

- Top left (blue): Renal Artery
- Top right (red): Renal Vein
- Right side, next to kidney: Kidney
- Below kidney: Ureter
- Bladder: Urinary Bladder
- Bottom tube: Urethra

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2) Complete the Statements

Now, let’s fill in the blanks using knowledge of the urinary system.

#### a) Blood flows to each kidney through the renal artery.

✔️ Correct – The renal artery carries oxygenated blood to the kidneys.

#### b) Inside the kidney, the blood is filtered, and the urine is formed from excess water, excess ions, and waste products brought by the blood.

✔️ Explanation:
- The nephrons in the kidney filter the blood.
- Waste products like urea, excess ions (e.g., sodium, potassium), and excess water are removed to form urine.

#### c) The two ureters drain the urine to the bladder where it accumulates. When the bladder fills, the urine will be evacuated from the body through the urethra.

✔️ Explanation:
- Ureters carry urine from kidneys to bladder.
- Once full, urine exits the body via the urethra.

#### d) Blood leaves the kidneys through the renal vein.

✔️ Correct – After filtration, deoxygenated blood exits the kidneys via the renal vein.

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✔ Final Answers:

#### 1) Labeling the Diagram (from top to bottom, right to left as shown):

- Renal Artery (blue arrow into kidney)
- Renal Vein (red arrow out of kidney)
- Kidney
- Ureter
- Urinary Bladder
- Urethra

#### 2) Fill-in-the-blanks:

- Blood flows to each kidney through the renal artery.
- Inside the kidney, the blood is filtered and the urine is formed from excess water, excess ions, and waste products brought by the blood.
- The two ureters drain the urine to the bladder where it accumulates. When the bladder fills, the urine will be evacuated from the body through the urethra.
- Blood leaves the kidneys through the renal vein.

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