Sense Organs

Question 1

Taste Sense also known as

Answer 1

Gustatory

Question 2

Animal gustatory sense is for what 3 tastes?

3 S’s

Answer 2

Sweet, Sour, Salty

Question 3

For the Gustatory sense

What are the chemical receptors ?

Answer 3

Papillae

located in taste buds & in the lininf of the mouth and parynx

Question 4

For the Gustatory Sense

What is the job of the chemical receptors?

Answer 4

Detect chemical substances dissolved in saliva & generate nerve impulses

Question 5

Olfactory Sense

Where are the chemical receptors located?

Answer 5

In the nasal mucosa

Mucous helps smells stick to hairs

Question 6

Olfactory Sense

Olfactory process

Answer 6

Olfactory cells -> hairs -> odor binds to receptor of hais -> nerve impulses generated

impulses travel via olfactory nerve to olfactory bulbs then the cerebrum

Question 7

Olfacorty Sense

Vomeronasal Organ

Answer 7

• Site where phomones are breathed in
• Lined with olfactory mucosa
• Connected to the nasal Cavity

Question 8

Olfactory Sense

What Is the Flehmen reaction?

Answer 8

Lip Curl
seen by animals aroused by the odors

Question 9

Auditory Sense

General: How does hearing work

Answer 9

Converts vibrations of the air molecules into nerve impulses

Question 10

Auditory Sense

What are the 3 Main parts of the Autitory system?

Answer 10

1. External ear (Pinna)
2. Middle ear
3. Inner ear

Question 11

Auditory Sense

What is the purpose of the External ear?

Answer 11

Acts as a funnel to collect sound wave vibrations and directs them to the eardrum

there are 2 sections-

Question 12

Auditory Sense

What Occurs in the Middle ear?

Answer 12

Amplification and transmits vibrations from eardrum to the inner ear

Question 13

Auditory sense

What occurs in the Inner ear?

Answer 13

Converts the mechanical vibrations to nerve impulses

Question 13

Auditory Sense

What sensory receptors does the inner ear have?
What are they for?

Answer 13

Mechanoreceptors
Hearing and equilibrium

Question 14

Auditory Sense

What makes up the Pinna (auricle)?

of the External ear

Answer 14

Elastic Cartilage and skin

Question 15

Auditory Sense

What are the names of the 2 portions of the External auditory canal

Answer 15

1. Vertical
2. Horizontal

Question 16

Auditory Sense

What does the External Auditory canal contain?

Which glands

Answer 16

Lined with skin
* Sebaceous & Ceruminous glands

Question 17

Auditory Sense

What part of the ear does the eardrum belong?

External, Middle or inner

Answer 17

External Ear

Question 18

Auditory Sense

Describe the Eardrum (Tympanic membrane)

What it is made from & What its purpose is

Answer 18

1. Made from thin connective tissue membrane
2. Vibrations strike the membrane and cause it to vibrate

Question 19

Auditory Sense

What are the 4 main componets of the Middle ear?

Answer 19

1. Tympanic cavity
2. Auditory Ossicles
3. Eustachian (auditory) Tube
4. Tympanic Bulla

Question 20

Auditory Sense

Describe the Tympanic Cavity

Answer 20

Small AIR filled space
Lined w/ thin mucous Membrane

Question 21

Auditory Sense

Name the 3 bones that Make up the Auditory Ossicles

Answer 21

1. Malleus
2. Incus
3. Stapes

Question 22

Auditory Sense

What do the Auditory ossicles do overall ?

Answer 22

transmit vibrations from the* tympanic membrane*
to the oval window of the cochlea

Question 23

Auditory Sense

What does the Eustachian ( Auditory ) Tube do?

what does it connect?

Answer 23

Equalizes air pressure on each side of the tympanic membrane

the middle ear w/ the nasopharynx

Question 24

# Auditory Sense What does the Tympanic Bulla do?

Answer 24

"may" improve perception of sounds of very low and very high frequencies

Question 25

# Auditory Sense What are the parts of the Innner Ear? | and what do they do?

Answer 25

1. Cochlea - hearing 2. Vestibule & Semicircular canals - Equilibrium

Question 26

# Auditory Sense Describe the Cochlea

Answer 26

* Shell shaped spiral cavity in the temporal bone * Organ of Corti (fluid- filled) hair cells- hearing receptors

Question 27

# Auditory Sense What occurs in the Cochlea

Answer 27

waves cause vibration of the fluid- bending the hair cells & generates impulse | different freq = different areas along Organ of Corti stimulated

Question 28

# Auditory Sense Where is the Vestibule located?

Answer 28

Between the Cochlea and semicircular Canals

Question 29

# Auditory Sense Vestibule has 2 saclike spaces, what are they called?

Answer 29

1. Utricle 2. Saccule

Question 30

# Auditory Sense - Vestibule Hair cells covered by a __ 1 __ matrix that contains __ 2 __.

Answer 30

1. Gelatinous 2. Otoliths

Question 31

# Auditory Sense What causes nerve impulses in the vestibule?

Answer 31

Otoliths and the matrix bend the sensory hairs

Question 32

# Auditory Sense What information issent to the brain from the Vestibule

Answer 32

The position of the heas and linear motion Static equilibrium

Question 33

# Auditory sense Describe the Semicircular Canals

Answer 33

1. 3 canals at right angles on 3 planes 2. Fluid- filled tubes w/ hair cells & gelatinous matrix

Question 34

# Auditory Sense What is the job of the Semicircular canals?

Answer 34

generates impulses - detailing rotary motion of the head Dynamic equilibium

Question 35

# Vision What are the layers of the Eyeball?

Answer 35

1. Outer Fibrous layer 2. Middle vascular layer 3. Inner Nervous layer

Question 36

# Vision What are the parts of the Outer Fibrous layer? | What is its job?

Answer 36

1. Cornea 2. Sclera 3. Limbus | Gives form to and protects the eyeball

Question 37

# Vision Describe the Cornea

Answer 37

* collagen fibers; no blood * Transparent * Admits light to interior of eye

Question 38

# Vision Describe the Sclera

Answer 38

* Dense fibrous connective tissue * "white" of the eye * Gives srength & shape to the eyeball

Question 39

# Vision Describe the Limbus

Answer 39

the junction of the cornea and the sclera

Question 40

# Vision What are the parts of the Middle Vascular layer ( Uvea)

Answer 40

* Choroid * Iris * Pupil