Women who have had radiation treatment to the chest, especially at a young age, are advised to have routine breast cancer screening. Yearly MRI screening may begin 8 years after treatment or by age 25 years, whichever is later. The benefits and risks of mammograms and MRIs for these women have not been studied.RI is used as a screening test for women who have one or more of the following: 1  Certain gene changes, such as in the BRCA1 or BRCA2 genes. 2  A family history (first degree relative, such as a mother, daughter or sister) with breast cancer.
Innervation of the Pectoralis Minor. In order for a muscle to contract and function, it must receive electrical impulses from the brain through a nerve or group of nerves, a process that is called innervation. The pectoralis minor muscle is innervated by the medial pectoral nerve. The medial pectoral nerve contains nerve fibers from the eighth cervical nerve (C8), which comes from the spine in the lower part of the neck, and the first thoracic nerve (T1), which comes from the spine in the upper part of the back. Lesson Summary. The pectoralis minor muscle is a
Making the world better, one answer at a time. The pectoralis minor originates on the third to the fifth ribs (and elevates ribs). It depresses the scapula (and elevates ribs).s a floating bone the scapula is often at the mercy of the more f â¦ ixed extremities and can be acted upon by several different muscles simultaneously.