Nervous acts
The neurons of an organism constitute numerous circuits that are organized in very complex networks. The nerve impulse that is transmitted by these interconnected neurons generates two types of acts:
BIOLOGÍA - GEOLOGÍA . COM |
|||
1st ESO |
3rd ESO |
4th ESO |
Biology 2nd Baccalaureate |
Index by courses |
Forums |
||
Biology and Geology 3rd compulsory secondary education 7.5. Nervous actsNervous actsThe neurons of an organism constitute numerous circuits that are organized in very complex networks. The nerve impulse that is transmitted by these interconnected neurons generates two types of acts: Reflex or involuntary actsThe reflexes or involuntary are fast, automatic, and are made without involving the encephalon. In a reflex act, the sensitive information only reaches the spinal cord, where the response is elaborated, so it is automatic. They are carried out when an immediate response is needed, such as in dangerous or harmful situations . The nerve impulse follows the shortest possible path as it goes from the receiver of the stimulus to the effector following a very simple neural circuit called reflex arc, so reflex responses are very fast. The reflex arc involves, as a minimum:
By MartaAguayo (Own work) Activity: Reflex arc . Activity: Reflex act . Animation: The knee jerk reflex . Answer in your notebook7.9.- Why is it good that we have reflex actions? Voluntary actsThe voluntary acts are conscious, and more elaborate than reflexes, and unlike reflex actions, participates in production the cerebral cortex. A voluntary act has the following components:
Although voluntary acts are performed when an external (or internal) stimulus is received, voluntary acts can also occur in the cerebral cortex without any stimulus to trigger it. Activity: Crossword. Activity: Voluntary acts. Test and video: The nervous system. Experiment with your body: Reaction time. Experiment with your body: Thinking takes time. Licensed under the Creative Commons Attribution Share Alike License 4.0 |
|||
Legal warning |
Blog |
Download |
Contact |
Follow us if it has been useful to you biologia-geologia.com.
Biology and Geology teaching materials for Compulsory Secondary Education (ESO) and Baccalaureate students. |