Respiration in birds differs from mammals in that birds have
a. lungs used for gas exchange only.
b. a comparatively higher tracheal volume.
c. air capillaries.
d. air sacs for ventilation.
e. all of these.
E
You might also like to view...
Mixes food with bile and pancreatic juice. Final enzymatic breakdown of food molecules, main site of nutrient absorption.
What will be an ideal response?
During the exhaustion stage of the general adaptation syndrome (stress response), stress overwhelms homeostasis. One characteristic of this stage is that ________.
A. energy demands are met primarily by carbohydrate metabolism B. glycogen supplies are depleted C. fermentation is not enough to provide the necessary ATP D. energy demands are met primarily by protein metabolism E. energy demands are met primarily by fat metabolism
Transports CO2 and oxygen.
A) Erythrocyte B) Monocyte C) Neutrophil D) Eosinophil E) Basophil
What contributes to the fetal portion of the placenta?
A) decidua capsularis B) allantois C) decidua basalis D) chorionic villi