Human ear ossicles are
incus and stapes
stapes
incus, malleus and stapes
incus and malleus
C.
incus, malleus and stapes
Ear ossicles are three small non- supporting bones of body, present in middle ear of human. They are responsible for transmitting and amplifying vibrations received from tympanum.
| Ear ossicle | Shape | Size |
| Malleus | Hammer | Largest ear ossicle |
| Incus | Anvil | Medium sized ear ossicle |
| Stapes | Stirrup | Smallest ear ossicle |
Sympathetic nervous system induces
Heartbeat
Secretion of digestive juice
Secretion of saliva
All of the above
'Adaptation' of eyes in dark is due to
depletionof vision pigment in rods
depletion of vision pigment in cones
repletion of vision pigment in rods
repletion of vision pigment in cones
In parasympathetic nervous system, which of the following is released?
Epinephrine
Norepinephrine
Serotonin
Acetylcholine
The junction between the axon of one neuron and the dendrite of the next is called
Junction point
A synapse
A joint
Constant bridge
If the threshold for hearing increasing 1000 times, the hearing loss is
40 decibels
50 decibels
60 decibels
None of these
Which cranial nerve has the highest number of branches?
Facial nerve
Trigeminal
Vagus nerve
None of these
Which of the following is important for muscle contraction and nerve impulse transmission?
Ca2+ ions
Ca2+ and Mg2+ ions
Mg2+ ions
Fe2+ ions
