Final answer:
A nurse admitting a female patient with anorexia nervosa should expect to see tachycardia and orthostatic hypotension during the admission assessment.
Step-by-step explanation:
When admitting a female patient with anorexia nervosa, the nurse can expect to see manifestations such as tachycardia and orthostatic hypotension during the admission assessment. Tachycardia is an abnormally fast heart rate, which is a common symptom of anorexia nervosa due to the body's response to malnutrition and low weight. Orthostatic hypotension refers to a drop in blood pressure when standing up, which can occur in patients with anorexia nervosa as a result of dehydration and electrolyte imbalances.