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A2 2.4.5
structure of the human brain
Question | Answer |
---|---|
Cerebrum | Responsible for the elements of the nerous system that are associated with 'being human' including thought, imagination and reasoning |
Copus callosum | Connects the two cerebral hemispheres |
cerebellum | controls the coordination of movement and posture |
hypothalamus | controls the autonomic nervous system and the endocrine glands |
medulla oblongata | controls the action of smooth muscle in the gut wall, and controls breathing moevements and heart rate |
cardiac centre | found in the medulla oblongata and regulates heart rate |
respiratory centre | found in the medulla oblongata and controls the rate and depth of breathing |
sensory areas | receive impulses indirectly from the receptors |
Association areas | compare input with previous experiences in order to interpret what the input means and judge an appropriate response. |
Motor areas | send impulses to effectors (muscles and glands) |
cerebellum | plays a key role in coordinating balance and fine movement |
spindle fibres | specialised fibres in muscles which give information about muscle tension to the cerebellum |
Wernicke's area | Named after Karl Wernicke, who, in the 1860s identified a region that when damaged caused problems with understanding language - the posterior speech area |
Broca's area | named after Paul Broca who, in the 1860s, examined the brains of patients with an inability to speak (aphasia) - the anterior speech area |
pituitary gland | endocrine gland underneath the hypothalamus, made up of the anterior and posterior lobes |
anterior lobe of pituitary gland | secretes a number of different hormones under the control of the hypothalamus |
posterior lobe of pituitary gland | stores and releases antidiuretic hormone, which has been produced in special cells in the hypothalamus |