Grabbing a small object, such as an apple, may seem automatic and easy. But few people consider the complex biological mechanism underlying this simple act. Neurons in the brain instantly fire in patterns that send commands down the spinal cord. These commands are relayed to muscle tissue in the arm. The tissue contracts, raising the arm, extending an elbow, or flexing the wrist and fingers. For some people with spinal cord injuries, those commands are hindered by their damaged nervous systems. Their brains are no longer able to send messages throughout their bodies. For these people, these actions may require substantial effort or be completely impossible.Do It!This process is _________.Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selectedA unprecedentedB excessiveC unconsciousD hazardous

Highlight the piece of evidence that best supports the claim.Claim: Although many reflexes appear clumsy, they protect people from harm.Reflexes often help children and adults avoid pain. For instance, most people will stretch their hands out in front of their bodies when they fall. This reaction, called the “parachute reflex,” helps prevent serious head injuries. Anyone whose hands have gotten scraped as a result of this reflex knows the pain was well worth the extra head protection.Submit answer

Claim: Although many reflexes appear clumsy, they protect people from harm.Reflexes often help children and adults avoid pain. For instance, most people will stretch their hands out in front of their bodies when they fall. This reaction, called the “parachute reflex,” helps prevent serious head injuries. Anyone whose hands have gotten scraped as a result of this reflex knows the pain was well worth the extra head protection.Submit answer

Georgina has suffered a brain injury and cannot move her right arm, even though the arm is undamaged. Her physiotherapist has arranged for Georgina to use a therapy machine that exercises her arm by moving it up and down for 30 minutes each day. The physiotherapist has also advised Georgina to think about moving her arm while she is using the machine.In terms of neuroplasticity, explain why the physiotherapist advised Georgina to think about moving her arm while using the machine.

If you decide to "snap your fingers," the first neurons to be stimulated are theMultiple Choicesensory neurons in the prefrontal area.motor neurons in the primary motor area.sensory neurons in the primary somatosensory area.motor neurons in the premotor area.

on voluntary actions that it it is controlled by nervous system