| DOPAMINE | Chemical compound occurring in the brain (8) |
| PLATELET | Minute cell occurring in the blood of vertebrates and involved in clotting of the blood (8) |
| MACKEREL | Any predatory marine fish of the family Scombridae, chiefly occurring in the Atlantic and Pacific oceans (8) |
| RUMBELOW | A meaningless or nonsense word occurring in the refrain of an old sea shanty, such as Hal-an-Tow (8) |
| APPESTAT | Theoretical control centre in the brain, possibly in the hypothalamus, that regulates feelings of hunger and satiety (8) |
| RHFACTOR | Antigen occurring in the red blood cells of many humans (2-6) |
| SUNLIGHT | Providing humans with vitamin D and triggering the release of serotonin and melatonin in the brain, a natural form of electromagnetic radiation (8) |
| MEMORIES | Accessible information stored in the brain (8) |
| THALAMUS | Large mass of grey matter in the brain (8) |
| CEREBRUM | A lot of mercury may be concentrated in the brain (8) |
| MIDBRAIN | Relay centre for Audio and visual information in the brain (8) |
| ACID | White crystalline compound occurring in numerous plants and prepared commercially from sodium phenol, used in the manufacture of aspirin, fungicides etc. (9,4) |
| SALICYLIC | White crystalline compound occurring in numerous plants and prepared commercially from sodium phenol, used in the manufacture of aspirin, fungicides etc. (9,4) |
| EMMENTAL | Space in the brain for milky solid |
| ALLTHERE | Sane in the brain (2 words) |
| LEFTSIDE | Where rational thought occurs in the brain |
| APOPLEXY | Sudden loss of consciousness caused by rupture or occlusion of a blood vessel in the brain |
| AMYGDALIN | Compound occurring in bitter almonds and apricot/peach stones (9) |
| TANNIN | Compound occurring in wine (6) |
| CRESOL | Compound occurring in coal tar (6) |
