A. The vestibule lies inside the dental arches

B. The lingual and hypoglossal nerves lie on the deep surface of the hyoglossus muscle in the floor of the mouth

C. In the permanent dentition there are a total of 8 molars

D. The parotid gland secretes a mucous and serous saliva

E. The mouth is demarcated from the pharynx by the palatoglossal folds

A. The sulcus terminalis divides the tongue into an anterior part innervated by cranial nerve IX and a posterior part innervated by cranial nerve X

B. The extrinsic muscles alter the tongue’s shape

C. All the muscles of the tongue, except for palatoglossus, are innervated by cranial nerve XII

D. The foramen caecum on the dorsum of the tongue marks the embryological origin of the thymus gland

E. The lingual follicles are the primary sites of the taste buds

A. The auditory tube links the inner ear to the nasopharynx

B. The recurrent laryngeal nerves from cranial nerve X pass beneath the inferior border of the cricopharyngeus muscles

C. The laryngopharynx is part of the respiratory tract

D. The piriform fossae lie in the oropharynx

E. The pillars of the faces define the tonsillar crypt housing the pharyngeal tonsils

A. The thyropharyngeal part of the inferior constrictor muscle acts as a sphincter at the opening of the oesophagus

B. The superior constrictor muscle arises mainly from the pterygomandibular raphe

C. The outer surface of the constrictor muscles is lined by the pharyngobasilar fascia

D. The constrictor and longitudinal muscles of the pharynx are all innervated by cranial nerve IX

E. The constrictor muscles overlap such that the interal surface of the middle constrictor lies on the external surfaces of the superior and inferior constrictors