Abnormally low blood sodium concentration is known specifically as

Abnormally low blood sodium concentration is known specifically as hyponatremia.
The word hypo- means 'under,' so basically 'not enough' of something. Natrium is the Latin word for sodium, so the word hyponatremia means 'not enough sodium.' Hypertension is abnormally high blood pressure, hyperkalemia refers to elevated concentrations of potassium, and water intoxication doesn't affect your sodium levels.

The fetus at this stage is curled up, almost doubled over, so remember to consider this as you draw the fetus the correct length