Discussion:
Activates Inhibitory Interneurons and Muscle Fatigue
Give 1-2 paragraph or more detailed explanation for each:
1. When an adult athlete trains strenulously at high altitudes (eg. in the Rocky Mountains for a period of months, he/she is likely to experience an increase in the concentration of oxygen carying cells in the blood, which is an example of physiological acclimatization, and this will be followed by development of a large, barrel-shaped chest, which is an example of developmental acclimatization. Explain?
2) A stimulus to which afferent neurons X, Y and Z are sensitive is detected in the middle of Y's receptive field. The same stimulus simultaneously activates receptors on the periphery of the receptive fields of X and Z. Is the explanation the fact that neuron Y activates inhibitory interneurons that directly inhibit the synaptic transmission of neurons X and Z.
Explain answer?
3) What is the result of lateral inhibition in the somatic sensory system? Explain answer?
4) What causes muscle fatigue after long-duration, low intensity exercise? Explain?
5) Is the optimal length of a skeletal muscle the shortest length the muscle can achieve while attached to bone, because the amount of overlap between thick and thin filaments is maximal there? Explain?