BIOL 242 Lecture Notes - Lecture 9: Biconnected Component, Longissimus, Transverse Abdominal Muscle
Document Summary
Lecture 9 10 (skeletal muscular system: origin of cranial and vertebral column musicles, somites and somatomeres each sclerotome splits and contributes to different vertebra. Developing muscle tissue naturally cross between developing vertebra: myotome blocks of undifferentiated muscle tissue, form originally from the notochord, this is the subdivision of the scleretome. Contributes mostly to axial muscles. (dermatome, myotome, sclerotome form together to make somite: cranial muscles, development of cranial muscles cells from myotome migrate to other regions to contribute to muscles. Interhyoideus: mammalian jaws, cat, anterior diagastric muscles along with the geniohyoid muscle, which helps to pull the jaw down. There are no muscles in the cat that move the mouth back, as is in most mammals. In herbivores, the articulation point and the tooth row is not aligned. This aligning helps to increase the direct bite force: cat (carnivore, temporalis is large to have a fast bite closure. In fish: the myomere will have a complex w shape.
