15) Spinal interneurons prevent muscle antagonists from interfering with an intended movement by A) the process of reciprocal in
hibition. 15) B) initiating a crossed extensor reflex. C) initiating a tendon reflex. D) activating reverberating circuits. E) initiating a stretch reflex.
In our body, not all the muscles contract and relax simultaneously. The muscle supporting certain reflex are contracted while the others need to be relaxed at that time. In the process of reciprocal inhibition, when a message of contraction is sent by the central nervous system to the agonist muscles, the tension in the antagonist muscles is inhibited by the impulses from the spinal interneurons so that the antagonist muscles get relaxed simultaneously and the reflex action can be completed without causing any damage to our muscular system. If both agonist and antagonist muscles will contract and relax simultaneously, there may be tear in the muscles that's why reciprocal inhibition is a important phenomena occurring in our body.
The area between 200 and 1,000 meters (656 and 3,280 feet) is the mesopelagic or “twilight” zone.
Explanation:
Light intensity in this zone is severely reduced with increasing depth, so light penetration is minimal. About 20 percent of primary production from the surface falls down to the mesopelagic zone.
Capilaries are tubes that transport blood and provide nutrition through diffusion in tissues. Transporting blood is a function of the circulatory system.
