Question

directions: create a model to show what happens when a person consumes large amounts of freshwater during exercise. include these components in the body model, close up cell model, or both. - blood stream - kidney - kidney cells - water - solutes (dissolved salts, sugars, nutrients) - urine include these interactions: - movement of materials in and out of cells when drinking lots of water - role of the kidney in the body and connection to blood stream - relationship between osmosis and blood plasma sodium (salts) human body model detailed model cell

Explanation:

Step1: Water intake during exercise

When a person consumes large - amounts of freshwater during exercise, the water enters the bloodstream. The body's fluid balance is initially disrupted as there is an excess of water relative to solutes.

Step2: Role of the kidney

The kidneys play a crucial role in maintaining the body's fluid and electrolyte balance. They receive the blood with the increased water load from the bloodstream. The kidneys filter the blood, and their cells work to reabsorb necessary solutes (like sodium, glucose etc.) and excrete the excess water as urine.

Step3: Osmosis and cell - water movement

Osmosis is the movement of water across a semi - permeable membrane from an area of lower solute concentration to an area of higher solute concentration. With the increased water in the bloodstream, the blood plasma becomes more dilute, especially in terms of sodium (salt). This creates a concentration gradient. Water will move into cells (including kidney cells and other body cells) because the intracellular fluid has a relatively higher solute concentration compared to the now - diluted extracellular fluid (blood plasma). This can cause cells to swell.

Step4: Overall model depiction

In the human body model, draw the bloodstream carrying the excess water to the kidneys. Show the kidneys filtering the blood and producing urine. In the cell model, draw arrows indicating the movement of water into the cell due to osmosis. Also, label the solutes in the blood plasma and inside the cell to show the concentration gradient.

Answer:

A model with the human body outline showing the bloodstream carrying water to the kidneys, the kidneys filtering and producing urine, and a cell model with arrows showing water movement into the cell due to osmosis and labeled solutes.