Downward dislocation of the humerus from the glenohumeral joint when carrying weight is prevented by

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later.when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

What is the correct trna sequence that would match the following mrna sequence.gcgaua

Describe the function of the endomembrane system? what organelles are involved?