The is a single, large extension from the soma.

Axon

Explanation:

Soma or cell body is one of the parts of neurons, the cells of the nervous system. Several short and branched and one large extension arise from the soma.  

The single large extension of soma is called the axon. Axon is the part of the neuron that serves to carry the nerve impulse away from soma during conduction of the impulse.  

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."