brain” because they detect and send nerve impulses (changes) to
the central nervous systemInformation reaching the cerebrum of the brain results in conscious sensation
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SENSE ORGANS (Ear and nose)
Содержание
- 1. SENSE ORGANS (Ear and nose)
- 2. Sense organsSense organs are known as the
- 3. ReceptorsReceptors receive certain environmental stimuli and change
- 4. Слайд 4
- 5. It has 2 sensory functions: HearingMaintaning balance or equilibriumEARS
- 6. EARSEar contains 3 main parts:Outer ear Middle earInner earHearingHearing and balance
- 7. Outer earAuditory canal has hairs and produces
- 8. Middle earIt contains three bones:Hammer (Malleus)Anvil (Incus)Stirrup
- 9. Eustachian tubeIt is located between pharynx and
- 10. Inner earThe inner ear has three areas:
- 11. CochleaThe hair cells of the cochlear canal,
- 12. Eardrum Ossicles Semicircular canals Auditory nerve (acoustic nerve)CochleaEustachian tubeAuditory canalPinnaDRAW
- 13. NoseNose is the organ of the body
- 14. NoseArea of chemoreceptors in the nasal cavity
- 15. THANKS!!!
- 16. Скачать презентанцию
Sense organsSense organs are known as the “windows of the brain” because they detect and send nerve impulses (changes) to the central nervous systemInformation reaching the cerebrum of the brain results
Слайды и текст этой презентации
Слайд 2Sense organs
Sense organs are known as the “windows of the
Information reaching the cerebrum of the brain results in conscious sensation
Слайд 3Receptors
Receptors receive certain environmental stimuli and change them into nerve
impulses
Types of receptors:
Photoreceptors detect light (Eyes)
Pain receptors sensitive to chemicals
released by damaged tissues or excess stimuli of pressure or heatThermoreceptors sense temperature (Hypothalamus and skin)
Chemoreceptors are responsible for taste and smell (tongue and nose)
Mechanoreceptors sense pressure, touching and hearing (Skin and ears)
Слайд 7Outer ear
Auditory canal has hairs and produces wax-like substance to
filter solid particles
The eardrum separates outer ear from the middle
earThe eardrum is hit by sounds and vibrates
Слайд 8Middle ear
It contains three bones:
Hammer (Malleus)
Anvil (Incus)
Stirrup (Stapes)
The hammer is
attached to the eardrum, the anvil connects the hammer to
the stirrupStirrup is connected to the oval window
Ossicles
Слайд 9Eustachian tube
It is located between pharynx and the middle ear
It
equalizes pressure in the middle ear and atmosphere
Eustachian tube
Слайд 10Inner ear
The inner ear has three areas: semicircular canals, vestibule
and cochlea
The semicircular canals and the vestibule are related
to equilibriumThe cochlea is concerned with hearing
Слайд 11Cochlea
The hair cells of the cochlear canal, called the organ
of Corti, synapse with cochlear (auditory) nerve
The cochlear nerve
generates nerve impulses that go to the brain stemFinally to the temporal lobe of the cerebrum, where they are interpreted as sound
Слайд 12Eardrum
Ossicles
Semicircular canals
Auditory nerve (acoustic nerve)
Cochlea
Eustachian tube
Auditory canal
Pinna
DRAW
Слайд 13Nose
Nose is the organ of the body involved in both
respiration and smell
The reception of smell takes place in chemoreceptors
located in nasal cavity
Слайд 14Nose
Area of chemoreceptors in the nasal cavity is known as
the olfactory region
This region has olfactory nerves
The message of smell
is carried to the brain by the olfactory nerves
