Potassium is needed by the body forMultiple select question.muscle contraction.blood clotting.bone integrity.nerve transmission.

Potassium is needed by the body for:

1. Muscle contraction: Potassium plays a key role in smooth, skeletal, and cardiac muscle contraction. It helps regulate the balance of fluids in the body and sends signals to muscle cells to stimulate contractions.

2. Nerve transmission: Potassium is crucial for nerve impulse transmission. It helps maintain the electrical conductivity of the brain and influences neurotransmitters which affect mood and stress levels.

3. Bone integrity: Although not as well-known as calcium, potassium also plays a role in maintaining bone health. It helps to reduce calcium loss from bones, thus helping to prevent osteoporosis.

However, potassium is not directly involved in blood clotting. This process is more dependent on other nutrients like vitamin K and calcium.