R3. Circulatory system
and blood
- R3a. Heart
- R3b. Vessels
- R3c. Blood
R7. Digestive glands
- R7a. Salivary and poisonous glands
- R7b. Liver
- R7c. Exocrine pancreas
R9. Excretion and
osmoregulation
- R9a. Kidney
- R9b. Other excretory organs
R11. Endocrine system
- R11a. Pituitary gland
- R11b. Thyroid gland - Parathyroid glands
- R11c. Adrenal tissue
- R11d. Endocrine pancreas
- R11e. Pineal gland
R13. Sense organs
- R13a. Stato-acoustic system (inner and middle ear)
- R13b. Chemoreception (taste - olfaction)
- R13c. Vision
- R13d. Various senses
R2. Muscle
- R2a. Skeletal muscle
- R2b. Cardiac muscle
- R2c. Visceral muscle
R6. Digestive system
- R6a. Oral cavity
- R6b. Esophagus
- R6c. Stomach
- R6d. Small and large intestine
R8. Respiratory system
- R8a. Upper respiratory tract
- R8b. Lower respiratory tract
R10. Nervous system
- R10a. Central nervous system
- R10b. Peripheral nervous system
R14. Miscellaneous -
Several organs
- R14a. Several organs, gross histology