Middle Ear

Middle Ear

Question 1. What are the contents and functions of middle ear? Explain tympanic reflex.
Answer:

“Understanding the middle ear through FAQs: Anatomy, functions, and uses explained”

Tympanic reflex:

• It can be activated either by sounds or one’s speech mechanism.
• When loud sounds are transmitted through the ossicular system into the CNS, a reflex occurs after a latent period of 40 – 80 milliseconds.
• It causes contraction of.

“Importance of studying the middle ear for medical students: Questions explained”

• As these two forces oppose each other, it causes stiffness of ossicles and thereby the transmission of sound is decreased.
• This helps in the following.
  1. Protects cochlea from damaging vibrations.
  2. Filters low frequency sounds.
  3. Protects tympani membrane from being ruptured by loud sound.
  4. Prevents fixation of footplate of stapes, against oval window during exposure to loud sound.

“Early warning signs of gaps in understanding compositional principles: Common questions”

Question 2. Taste receptors.
Answer:

• The taste receptors are the chemoreceptors which are stimulated by substances dissolved in the oral fluids.
• They are the type III cells of taste buds.
• They are located on the edges and dorsum of the tongue, on the epiglottis, soft palate and pharynx.
• The taste buds are located in the walls of the papillae.

Types of Papillae:

“Factors influencing success with middle ear studies: Q&A”

• The cells within the laste buds are of two types.
  • Gustatory receptor cells.
  • Supporting cells.