The posterior papillary muscle in the left ventricle of the heart in some primates.
D000818:Animals; D002521:Cercopithecus / Q000033:anatomy & histology; D000882:Haplorhini / Q000033:anatomy & histology*; D008251:Macaca / Q000033:anatomy & histology; D010210:Papillary Muscles / Q000033:anatomy & histology*; D010215:Papio / Q000033:anatomy & histology; D011323:Primates / Q000033:anatomy & histology*; D011443:Strepsirhini / Q000033:anatomy & histology