Final answer:
The 4th pharyngeal arch gives rise to the palatopharyngeal arch, parts of the larynx, the aortic arch, and various laryngeal muscles.
Step-by-step explanation:
The 4th pharyngeal arch in human embryonic development gives rise to several key structures. Among these structures is the palatopharyngeal arch, which is a muscular fold that extends from the lateral side of the soft palate to the side of the pharynx. This arch plays a significant role in the formation of parts of both the respiratory and digestive systems. Moreover, components derived from the 4th pharyngeal arch also contribute to the anatomy of the head and neck, including the formation of part of the larynx such as the cricoid cartilage, the aortic arch, and various muscles associated with the larynx.