Biology-B5-The Brain 0.0 / 5 ? BiologyHomeostasisNervous system, hormones and behaviourGCSEAQA Created by: tonisha_Created on: 20-10-21 19:19 How many interconnecting neurones are found in the brain? billions 1 of 32 The outer, highly folded part of the brain is called what? the cerebral cortex 2 of 32 What are the functions of the cerebral cortex? (4) language memory social skills consciousness 3 of 32 What is the second part of the brain called? the cerebellum 4 of 32 What does the cerebellum control? (3) balance movement co-ordination 5 of 32 What is the part of the brain called that is located at the base? the medulla 6 of 32 What does the medulla control? the heart rate the breathing rate movement in the gut 7 of 32 (4) The brain is difficult to study as it is protected by what? the skull 8 of 32 This makes it what for us to do to the brain? makes it harder for us to access the brain 9 of 32 It is also highly what? complex 10 of 32 It is also very? delicate 11 of 32 Which means it is easy to what? damage 12 of 32 (3) One way in which scientists can investigate the brain is to electrically what? electrically stimulate parts of the brain 13 of 32 Another way is that they can study patients already with what? brain damage 14 of 32 Another method is? MRI scan 15 of 32 Electrical Stimulation ------------------------------- What is Electrical stimulation? where different parts of the brain are stimulated 16 of 32 What are they stimulated with? weak currents 17 of 32 What is the patient then asked? asked about what they have experienced 18 of 32 Is the patient put to sleep or awake in this method? awake 19 of 32 How is the patient awake? The brain processes what? pain 20 of 32 but has no sensory what? nerve endings 21 of 32 or ? pain receptors 22 of 32 Therefore, it is possible to what? electrically stimulate someone whilst they are awake 23 of 32 However, this method requires what? surgery 24 of 32 so what is needed? local anaesthesia 25 of 32 If the visual area of the brain is stimulated, what will the patient experience? a flash of colour 26 of 32 If the motor area of the brain is stimulated, what will the patient experience? they will make an involuntary movement 27 of 32 What are 2 risks associated with this? risk of brain infection risk of brain damage 28 of 32 What are 2 benefits of this method? direct feedback clear linkage between regions and functions 29 of 32 Why may electrical stimulation be used? What do the neurones respond the same as? the neurones respond to external electrical stimulus in the same way that they would to and internal stimulus 30 of 32 MRI Scan ----------------------- An MRI Scan shows the levels of what taking place where? the levels of activity taking place in different parts of the brain 31 of 32 Why may some patients feel traumatised by an MRI Scan? they may feel claustrophobic due to them being completely enclosed 32 of 32
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