Human patients who have had their stomachs surgically removed eat
A) so little that they need to be fed intravenously to survive.
B) much more than do humans with stomachs.
C) continue to maintain their body weights by eating more meals of smaller size.
D) only through implanted fistulas.
E) only wet food.
Question 2
In a classic study, a stomach was transplanted from one rat into another and connected to the circulatory system of the recipient. Food was then injected into the implanted stomach. This experiment indicated that
A) the gastrointestinal tract produces a satiety signal.
B) food-related chemical signals from the stomach are transmitted through the circulatory system to the brain.
C) hunger signals from the stomach are transmitted through the nervous system to the brain.
D) both A and B
E) both A and C
The human oxygen-hemoglobin dissociation curve.
Eight weeks old human embryo
Human brain
A human karyotype.
Human civilization developed during the most recent interglacial stage
A wide variety of pathogens may live on or in the human body