If the knee was held rigid and the biceps femoris contracted, what movement would occur

Answer and Explanation:

The femoral biceps is one of the hamstrings. These muscles are located in the back of the thigh and are the most important knee flexors.

In addition, the biceps have the ability to extend the thigh over the pelvis and rotate the hip laterally. This is because it has a muscular belly that originates from the hip, more precisely in the ischial tuberosity of the ischium.

When the biceps are contracted, its most important function is to contract the knee, but if it remains rigid its function will be mainly the extension of the thigh.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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