Brain depends on blood for the supply of

Options

A. ATP and glucose
B. oxygen and ATP
C. oxygen and glucose
D. oxyen and electrolytes

Explanation

To answer the question "Brain depends on blood for the supply of," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks what substances the brain receives from the blood. The brain is a vital organ that requires specific nutrients to function properly.

2. **Identifying Brain Functions**: The brain controls various functions in the body, including movement, balance, hearing, and vision. To perform these functions, it requires energy.

3. **Energy Requirement**: The brain primarily needs energy in the form of ATP (adenosine triphosphate). ATP is generated from glucose, which is a key energy source for the brain.

4. **Glucose Supply**: The brain consumes about 15-20% of the body's total glucose supply. This indicates that glucose is critical for the brain's energy needs.

5. **Oxygen Supply**: In addition to glucose, the brain also requires oxygen to produce ATP through cellular respiration. Oxygen is essential for the metabolic processes that generate energy.

6. **Conclusion**: Therefore, the brain depends on blood for the supply of glucose and oxygen, which are crucial for its energy production and overall functioning.

### Final Answer:
The brain depends on blood for the supply of **glucose and oxygen**.

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