Question

1. The tiny bones of the middle ear that transmit vibrations from the tympanic membrane to the inner ear are the auditory

2. The spiral bony canal in the inner ear that houses the organ of Corti, responsible for transmitting sound impulses is the

3. The branch of the Autonomic Nervous System that adapts the body for rest and digestion is the.......................nervous system

4. The spinal nerve of the cervical plexus that is the motor nerve for the diaphragm is the..........................nerve

Answer 1

Answer

1. The tiny bones of the middle ear that transmit vibrations from the tympanic membrane to the inner ear are the auditory ossicles.

• There are three auditory ossicles that amplify the sound vibrations and tramit them to inner ear.
  - Malleus
  - Incus
  - Stapes

2. The spiral bony canal in the inner ear that houses the organ of Corti, responsible for transmitting sound impulses is the cochlea.

• Cochlea is the part of inner ear. It contains organ of corti with hair cells responsible for detection of auditory stimulus.
  
  

3. The branch of the Autonomic Nervous System that adapts the body for rest and digestion is the parasympathetic nervous system.

• Parasympathetic nervous system calms the body.
• It reduces heart rate, cardiac contractility. It promotes digestive processes and salivation.
  
  

4. The spinal nerve of the cervical plexus that is the motor nerve for the diaphragm is the phrenic nerve.

• Phrenic nerve controls contraction and relaxation of the diaphragm and hence it is very important for the act of breathing.