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1 As alcohol passes through the mouth, throat, and gullet, it irritates the membranes lining these passages and increases the secretion of saliva. Alcohol can be smelled on the breath. 2 Alcohol also irritates the lining of the stomach. Heavy drinking causes the stomach lining to become thickened and overactive. This often leads to gastritis, with its symptoms of indigestion, retching, and loss of appetite. 3 Alcohol is absorbed from the stomach and intestines into the 54 Brain disorders Disorders of the brain and nerves Amnesia The inability to memorize and/or to recall previously memorized information.
S. population suffers a psychiatric or psychological disorder at some time in their lives. More people are being treated both in and out of hospitals than in the past, although the stays in hospitals tend to be shorter. We outline some of the types of treatment available (see pages 50–51). Rather Stress contributes to the following physical disorders: 1 Headaches 2 Exhaustion 3 Excessive sweating 4 Facial flushing 5 Nasal catarrh 6 Asthma attacks 7 High blood pressure 8 Heart disease 9 Skin diseases 10 Indigestion and stomach ulcers 11 Back pain 12 Diabetes 13 Diarrhea 14 Rheumatism and arthritis 49 50 Exercises to relieve stress Relaxation techniques aim to combat stress by bringing the “fight or flight” response of the body under control.
Spinal nerves are also developing lower down the body. b e d ● ● ● ● ● ● Embryo: 7 weeks By this point, the forebrain is divided into the diencephalon (f), which contains the thalamus, and the telencephalon (g). Embryo: 11 weeks The cerebellum (h) becomes apparent by this time as it grows from a swollen area on the hindbrain. f Fetus: 4 months As the cerebellum (h) develops, the movements of the fetus increase and it begins to respond to sound. h h ● ● ● g ● SECTION 2: BRAIN Fetus: 6 months The cerebrum (i) begins to fold in on itself.