This document describes the main human sense organs - eyes, ears, nose, tongue, and skin. It discusses the function and basic anatomy of each sense organ, including key parts like the retina (eyes), cochlea (ears), olfactory region (nose), taste buds (tongue), and epidermis and dermis (skin). It also outlines some common ailments of each sense organ and tips for proper care, such as avoiding nosebleeds, ear infections, cracked tongue, and skin conditions like acne.

1. Sense
Organs
3rd Grade

2. OBJECTIVE
❑ Describe the functions of the sense
organs of the human body

3. Introduction
NOSE
EARS
EYES TONGUE
SKIN

4. Sense Organs and
How to Care for
Them

5. Introduction
01

6. Introduction
Each sense organ has special nerve cells. These nerve cells
gather information from your environment.
Messages from most parts of your body travel through the
spinal cord. The spinal cord is a soft organ that connects your
brain with the nerves in your body. The
The nerves in the spinal cord carry the information to the
brain and back to the part which will perform the desired
function.

7. 02
EYES

8. Sense of sight : EYES

9. 03
NOSE

10. Nose
➢ organ for smelling
An odor is a chemical given off by an
object. When this chemical gets into the
nose, the nerve send signals to the brain
which tells you what you just smell.

11. Sense of Smelling : NOSE

12. Parts of the Nose and How
Each Works
The nose is divided
into the external and
internal parts

13. External Part
Nostrils
❑ two openings of your nose
❑ serve as entrance to your nasal
cavities
Parts of the Nose and How
Each Works

15. Internal Part
❑ The interior part of nose is divided into two
major passages called nostrils
❑ Each has:
✓ respiratory region
✓ olfactory region
Parts of the Nose and How
Each Works

16. Internal Part
✓ respiratory region
❑ used for breathing
✓ olfactory region
❑ used for smelling
Parts of the Nose and How
Each Works

17. Nasal cavities – are lined with small,
hair-like structures cilia.
❑ These cavities also contain mucous
membranes that secrete a sticky fluid
called mucus, and warmed by the blood
within the blood vessels.
Parts of the Nose and How
Each Works

18. Parts of the Ear and How Each
Works
The olfactory region, which is
located within mucous membrane,
contains olfactory cells.

19. Olfactory
❑ Are nerve cells sensitive to
odor.
Parts of the Nose and How
Each Works

20. Common Nose
Ailments

21. Nosebleed

22. Proper Care for
the Nose

23. 04
EARS

24. Sense of Hearing : EARS

25. EARS
The ear is the sense organ for hearing.
The sound produced by any object is caught
by your outer ear, and it is passed on to the
nerves in the inner ear that carry messages
to the brain. The brain tells you what you
hear.

26. Parts of the Ear and How Each
Works
What are the functions
of the human ear?
1. Hearing
2. Maintaining balance of the body or
equilibrium

27. Outer ear
Parts of the Ear
Inner ear
Middle ear

30. Outer Ear
The outer ear – collects sound waves and sends them to
the middle ear. It is the visible part of the ear
The three parts of
the outer ear
Pinna or Auricle External Auditory
Canal
Tympanic Membrane
(Anterior Eardrum)

31. Outer Ear
Pinna or Auricle
❑ also called auricle, is a flap of skin supported
largely by the cartilage.
❑ curved part of the ear attached to the side of
the head; its shape makes it efficient in
collecting and capturing sound waves.

32. External Auditory Canal
✓ Serves as the passageway of sound waves
into the ear.
✓ Composed of glands which secrete ear wax.
✓ The sound waves that pass through the
auditory canal go to the eardrum.
Outer Ear

33. Tympanic Membrane (Anterior Eardrum)
✓ This part separates the outer ear
from the middle ear at the end of the
auditory canal that is very sensitive to
sound.
Outer Ear

34. Outer ear
Parts of the Ear
Inner ear
Middle ear

36. Middle Ear
The middle ear – is a hollow air-filled cavity.
It is consists of:
Portion of the
tympanic cavity
Three little
bones
Eustachian
tube

37. Three tiniest bones of the body:
✓ Hammer, Anvil, and Stirrup
✓ These bones form a chain across the middle
ear, linking the eardrum to another
membrane.
Middle Ear

38. Hammer, Anvil, and Stirrup
✓ Hammer - is attached to the
eardrum.
✓ Anvil – connects the
hammer to the stirrup
✓ Stirrup – connected to the
oval window
Middle Ear

40. Eustachian tube
✓ leads to the back of the nose down to the
throat to allow the passage of air into and
out of the middle ear
Middle Ear

44. Outer ear
Parts of the Ear
Inner ear
Middle ear

46. Inner Ear
The inner ear consists of the cochlea and the
semicircular canals. It is located deep in the skull
It is consists of:
Cochlea Semicircular
canals
Auditory nerve

47. Cochlea
✓ Is the coiled tube which shape is shaped like the
shell of a snail.
✓ It is filled with a fluid and separated by
membranes.
✓ Lining one of the membranes are specialized
hair cells that are sensitive to vibration.
Inner Ear

48. Cochlea
✓ The cochlea contains the actual organ of hearing
called ORGAN OF CORTI
✓ Organ of corti – this organ receives the sound
waves and transmits them to the brain.
Inner Ear

50. Semicircular canals
✓ Enable the body to maintain balance.
✓ Consist of interconnected loop-shaped
tubes.
✓ Contains fluid and hairlike projections that
detect changes in body positions
Inner Ear

51. Auditory nerve
✓ Responsible for sending message to the
brain.
Inner Ear

52. How do you hear?
1. The pinna collects sound waves produced by vibrating objects.
2. Sound waves travel along the auditory canal and strike the eardrum.
3. The vibration of the eardrum causes the three small bones to move.
4. As they move, they set up a series of vibrations in the membranes
between the middle ear and the inner ear.
5. When these membranes vibrate, the fluid in the cochlea moves.
6. The organ of Corti in the cochlea has sensor cells that receive the
sound and send it to the brain through the auditory nerve.
7. The brain tells what you hear.

53. Common Ear Ailments
and Defects

54. Ear infection
Ear boil
Deafness

55. Proper Care for
the Ears

56. 05
TONGUE

57. Sense of tasting : TONGUE

58. Parts of the Tongue and How
Each Works
The surface of the
tongue is covered with
small projections called
papillae

59. Parts of the Tongue and How
Each Works
Within the papillae are the
taste receptors or taste buds.
Each taste bud consists of a
number of sense cells that are
responsible for receiving
different taste sensations

60. Common Tongue
Ailments

61. Cracks
White Mouth or Oral Thrush
Sore tongue
Stomatitis

62. Proper Care for
the Tongue

63. 06
SKIN

64. Sense of sight : SKIN

65. Skin
The skin is made up of:
Outer layer
Inner layer

66. Outer Layer of the Skin
Epidermis
❑ the outer layer
❑ The cells in this layer are tough and flat.
❑ The top part of this layer is made up of
dead cells.

67. Inner Layer of the Skin
Dermis
❑ the inner layer
❑ The dermis is made up of living cells.
❑ It has blood vessels, oil glands, and sweet
glands.

68. Inner Layer of the Skin
Dermis
❑ Fatty tissues – provide your body with heat
and protect your internal organs.

69. Inner Layer of the Skin
Dermis
❑ blood vessels
- produce oil to make your skin shiny and keep
it from drying.
❑ sweat glands
- produce sweat or perspiration to keep your
body cool

70. Common Skin
Ailments

71. Scabies
Ringworm Athlete’s foot
Tinea flava (an-an
Boil (pigsa)
Acne

72. Proper Care for
the Skin

73. CREDITS: This presentation template was created
by Slidesgo, including icons by Flaticon, and
infographics & images by Freepik