What are the muscles of the thorax? There are five muscles that make up the thoracic cage; the intercostals (external, internal and innermost), subcostals, and transversus thoracis. These muscles act to change the volume of the thoracic cavity during respiration. What are the muscles of the shoulder girdle? The five muscles that comprise the function …
The abdominal muscles form the anterior and lateral abdominal wall and consist of the external abdominal obliques, the internal abdominal obliques, the rectus abdominis and the transversus abdominis. Acting together these muscles form a firm wall that protects the viscera and they help to maintain erect posture. The rectus abdominis muscle, also known as the …
Anterior and Medial Muscles Promoting Movements of the Thigh and Leg The muscles in the anterior compartment of the thigh are innervated by the femoral nerve (L2-L4), and as a general rule, act to extend the leg at the knee joint. There are three major muscles in the anterior thigh – the pectineus, sartorius and …
What are the major muscles of the face? The facial muscles include: How many muscles are in your face? There are 43 muscles in the face, most of which are controlled by the seventh cranial nerve (also known as the facial nerve). This nerve exits the cerebral cortex and emerges from your skull just in …
Muscles of the Pelvic Floor and Perincum The pelvic muscles support the bladder, bowel, and uterus. When they contract, the organs are lifted and the openings to the vagina, anus, and urethra are tightened. When the muscles are relaxed, urine and feces can be released from the body. Pelvic floor muscles also play an important …