PHYL 2041 Lecture Notes - Lecture 15: Chorea, Dementia, Brainstem
20 Nov 2018
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Phyl 2041 lecture 15 november 1, 2018 postural reflexes, higher motor areas, sensory cortex. Postural reflexes: coordinate muscles to create normal body shapes and positions, balance: humans are tall, thin structures balanced on a relatively small based (feet). If the center of gravity falls outside the base, the body falls. Yet we are able to do many complex movements without failing. This is accomplished by the righting reflexes, which is regarded as our foundation of our posture. We need two of the three for stable balance: muscle and joint receptors in the neck provide reflex control of flexor and extensor muscles in the limbs to keep the body upright. These reflexes are coordinated with the other righting reflexes. The spinal cord cannot to put together all of the muscle movement we use in our everyday coordination of the muscles. The coordination of muscles requires a lot of neural connection and activity.
