using radionuclide-labelled microspheres , 15 micron in diameter , we studied blood flow in the respiratory muscles ( diaphragm and intercostal muscles ) , abdominal organs ( adrenal glands , kidneys , pancreas , spleen and the small and large intestines ) , muscles of propulsion ( gluteus medius and biceps femoris ) , and other working ( triceps brachii and longissimus dorsi lumborum ) and non-working ( temporal and masseter ) muscles of ponies at rest and during maximal exercise performed on a treadmill .
C0001625
adrenal glands
C0022646
kidneys