The lymph vessels have a structure within that keeps the lymph moving in one direction and prevents backflow, this structure is called a A. door
B. valve
C. closing
D. gate

answer:

well the blood rushes to the vessles in your pp (lol) it also happen because u see somthin erotic or pleasing somtimes it happenes by accdent or by purberty or an dream (know an an wet dream)

explanation:

the treatment of other conditions (e.g., cystic breast disease) and for other medical reasons. Mastectomy is most effective when the cancerous tumour is discovered at an early stage and the malignant cells are localized. In order to best ensure the removal of all cancerous tissue, however, a margin of tissue surrounding a tumour and, sometimes, other nearby structures are also removed. Thus, there are several types of mastectomy, the selection of procedure depending on the location and extent of the disease (determined by X ray, thermography, and other diagnostic techniques) and the nature of the cancerous cells (determined by biopsy).

Explanation:

^^

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Explanation: