Table 1.

List of organ structures included in the atlas

Organ system	Included structures/organs
Nervous	Brain structures (medulla, cerebellum, olfactory bulbs, external cerebrum, striatum, lachrymal glands); spinal cord
Musculoskeletal	Skin, muscle surface, masseter muscles; individual bones (skull, 35 vertebrae, ribs, clavicles, scapulas, sternum, pelvis, forepaws, distal forelimbs, proximal forelimbs, proximal hindlimbs, distal hindlimbs, hindpaws)
Cardiovascular	Heart (pericardium, left and right ventricles, left and right atriums); main aorta and vena cava
Respiratory	Lungs; nasal cavity
Digestive	Liver, gallbladder, stomach, and intestines
Immune	Spleen, thymus
Renal/urinary	Kidneys and bladder
Reproductive	Testis
Vision	Eyes
Adipose	Neck brown fat, subcutaneous fat, abdominal fat