The formulation of the question is in my opinion somehow missleading: since the m. deltoideus originates from the spina scapulae, too, the formulation is too restrictive. Plus, as answered in question 7, horses and pigs don't have any acromium, but do have a deltoideus muscle. | The formulation of the question is in my opinion somehow missleading: since the m. deltoideus originates from the spina scapulae, too, the formulation is too restrictive. Plus, as answered in question 7, horses and pigs don't have any acromium, but do have a deltoideus muscle. |