First he pollinated  short pea plants with tall pea plants. T â¦ he next generation of pea  plants resulting from the expiriment were all tall pea plants. He  bred two of the pea plants from thhe new generation and they ended  up having 3 tall pea plants and 1 short pea plant.
Intercostal muscles are several groups of muscles that run between the ribs, and help form and move the chest wall. The intercostal muscles are mainly involved in the mechanical aspect of breathing.These muscles help expand and shrink the size of the chest cavity to facilitate breathing. External intercostal muscles aid in quiet and forced inhalation. 2  They originate on ribs 1-11 and have their insertion on ribs 2-12. 3  The external intercostals are responsible for the elevation of the ribs and bending them more open, thus expanding the transverse dimensions of the thoracic cavity.
The muscles found between your ribs are called intercostal muscles. Together with other chest muscles, the internal and external intercostal muscles allow movement and stabilize your chess wall.However, they can be strained during sports or other conditions when sudden twisting of upper body occurs.Read this article for full understanding of intercostal muscles and its strain.here are two types of intercostal muscles: the internal and the external intercostal muscles. These muscles have blood vessels and nerves, which are also found in the intercostal space between ribs.