**5.9 Muscles that connect the thoracic limb to the body**

	- M. pectoralis superficialis (m. pectoralis major):
		- a. Pars sternocapsularis: The sternoclavicular joint and the manubrium is the origo while the insertion is the intertubercular groove of the humerus (**Figure 30**).
		- b. Pars sternalis: This part has the same insertion site as the former but finds it origin along the entire length of the sternum (**Figure 30**).
		- c. Pars abdominalis: The origin is the xiphoid process and the cranial aspect of the external sheath of the straight abdominal muscle. The muscle inserts deep to the sternal part into the humerus (**Figure 30**).

M. pectoralis minor (m. pectoralis profundus): This pectoral muscle lies deep to the superficial pectoral muscle. It has origin on the cartilages of the 2nd to 6th ribs and is inserted into the greater tuberosity of the humerus (**Figure 30**). *Anatomy of the Rhesus Monkey (*Macaca mulatta*): The Essentials for the Biomedical Researcher DOI: http://dx.doi.org/10.5772/intechopen.99067*

M. subclavius: This small fusiform muscle arises from the 1st costal cartilage and is inserted into the clavicle (**Figure 30**).

