Trismus in parapharyngeal abscess is caused by spasm of which of the following muscle?
Parapharyngeal space - It is pyramidal in shape . base at base of skull and apex at hyoid bone Its divided into two components anterior & posterior. The trismus is seen in the anterior compament parapharyngeal abscess and it is due to spasm of the medial pterygoid muscle.
Medial pterygoid
Lateral pterygoid
Masseter
Temporalis
FMGE 2018