The brachial plexus is associated with which of the following? A. Innervation of the upper limbs
B. Innervation of the lower limbs

C. Axillary nerve is a terminal branch
D. A and B are correct
E. A and Care correct

innervation of the upper limbs

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this