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
Spinal roots: C5 and C6. Sensory functions: Gives rise to superior lateral cutaneous nerve of arm, which innervates the skin over the lower deltoid â(âregimental badge areaâ). Motor functions: Innervates the teres minor and deltoid muscle, abductors of the arm at the shoulder.he teres minor is part of the rotator cuff muscles of the shoulder. This set of muscles acts to stablise the glenohumeral joint. Acting individually, the teres minor externally rotates the upper limb. The muscle is innervated the posterior terminal branch of the axillary nerve.