Ear

1.A 12 year old boy developed fever and painful swelling just in front and below the lobule of right ear. On examination the right ear lobule was found to be lifted by the swelling. Based on your knowledge of anatomy answer the following questions:

• a) Identify the gland that is swollen
• b) Explain the anatomical basis of pain arising from the swelling
• c) Describe the gross features and relations of this gland
• d) Describe the secretomotor nerve supply of the gland

2.A 35 year – old female came with a history of swelling below the ear lobule on right side. The swelling was associated with pain.

• a) Which is the structure involved.
• b) What are the coverings, surfaces and borders of the structure.
• c) What are the structures passing through it.
• d) Write the secretomotor pathway of the structure

3.A 50-year-old man presented with a history of rapidly growing painful swelling on the face below the ear lobule on the left side. On examination the left ear lobule was found to be lifted by the swelling. There was an inability to close the left eye and to blow the cheek. The angle of mouth was deviated to the right side.

• a) Name the surfaces, borders and structures related to the affected organ
• b) Give the nerve supply of the organ
• c) Correlate the symptoms seen in relation to the anatomical structures

4.A 70-year-old man presented with a rapidly growing swelling below the ear lobule on the left side. The left ear lobule is lifted due to swelling. The person was unable to close the left eye and blow his mouth. Angle of mouth deviated to right side.  Which is the gland enlarged  What major structures pass through this gland  Name the surfaces and relations of this gland.  Which nerve is involved in this case. Give the extra cranial distribution by this nerve

5.A 55 years old man presented with a rapidly growing swelling on the left side his face just below the ear lobule. On examination, the ear lobule was found to be lifted by the swelling. Following surgical excision of the swelling, the person found it difficult to close the left eye and blow the cheek. The angle of mouth was deviated to the right. Based on your knowledge in anatomy, answer the following questions: ●Which anatomical structure is likely to be involved to form the swelling. ● Briefly describe the external features, relations and blood supply of the structure involved ● Accidental injury to which nerve is the probable cause of the man’s difficulties mentioned in the question. ● Briefly explain the reasons for these disabilities

1.Tympanic membrane

2.Auditory tube

3.Middle ear

4.Medial wall of middle ear

1.Styloid apparatus

2.Contents of middle ear cavity

3.Styloid process

1.Area of supply of Chorda Tympani nerve

2.Styloid process of skull

3.Stapedius attached to this structure

4.Lateral wall of middle ear

1.Chronic middle ear infections have produced a lesion in the tympanic plexus in the middle ear cavity which will result in

• a) Diminished mucus in the nasal cavity
• b) Diminished mucus on the soft palate
• c) Diminished saliva production by the parotid gland
• d) Diminished saliva production by the submandibular and sublingual glands

2.The nerve closely associated with the tympanic membrane is

• a) Chorda tympani
• b) Lesser petrosal
• c) Vestibulocochlear
• d) Facial

3.The pyramid gives attachment to

• a) Stapedius
• b) Tensor tympani
• c) Anterior ligament of malleus
• d) Short process of incus