biology notes

✦✦✦BRAIN ✦✦✦ ★ IN ANIMALS, ALL LIFE ACTIVITIES ARE UNDER THE CONTROL OF BRAIN. CRANIUM; ★ BRAIN IS SITUATED INSIDE A BONY CRANIUM (PART OF SKULL) . MENINGES; ★ INSIDE CRANIUM, BRAIN IS COVERED BY THREE LAYERS CALLED MENINGES.  FUNCTION OF MENINGES; ★ MENINGES PROTECT BRAIN AND ALSO PROVIDE NUTRIENTS AND OXYGEN TO     BRAIN TISSUE THROUGH THEIR CAPILLARIES. FLUID-FILLED VENTRICLES; ★ THE BRAIN CONTAINS FLUID-FILLED VENTRICLES THAT ARE CONTINUOUS WITH    THE CENTRAL CANAL OF SPINAL CORD. CEREBROSPINAL FLUID; ★ FLUID WITHIN VENTRICLES AND CENTRAL CANAL IS CALLED CEREBROSPINAL     FLUID (CSF) . DIVISIONS OF BRAIN; THE BRAIN CAN BE DIVIDED INTO; ★ FOREBRAIN ★ MIDBRAIN  ★ HINDBRAIN FURTHER DIVISION OF FOREBRAIN;  FOREBRAIN IS FURTHER DIVIDED INTO THREE FUNCTIONAL PARTS THE  ★ THALAMUS, ★ THE LIMBIC SYSTEM  ★ THE CEREBRUM.  THALAMUS; ★ THALAMUS CARRIES SENSORY INFORMATION TO THE LIMBIC SYSTEM AND   CEREBRUM. THE INFOR...