BIOLOGY 105 Lecture Notes - Lecture 3: Traumatic Brain Injury, Cerebrospinal Fluid
Document Summary
Incredibly complex--> seat of intelligence: form/hold memories, directs movement, contains 100 billion neuron/ 100 trillion connections, texture/consistency of jello, protection from injury, bones (skull, membranes (3, cerebral spinal fluid. Concussion: mild traumatic brain injury (tbi, action of striking together, relatively common--> 3. 8 million/year in usa, 20% come from sports, caused by rapid acceleration/deceleration of the brain, no gross/structural changes. Causes: mild traumatic brain injury (tbi, action of striking together, relatively common--> 3. 8 million/year in usa, 20% come from sports, caused by rapid acceleration/deceleration of the brain, no gross/structural changes. Interrupts activity in brain regions: disrupts axons and connections between cells, damage is mostly reversible although a few cells may die. Irritability: sadness, more emotional than normal, anxiety, sleep, sleeping more/less than normal, trouble falling asleep. Healing: can receive another concussion--> second impact syndrome, concussion occurs while one is healing--> devastating, brian swelling, rest, teens may need to resume light activity sooner to help recover faster.
