Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BIO108-Gen Physio (Iv and Josh Collab) > Sense organ > Flashcards

Sense organ Flashcards

1
Q

Characteristics of Sense organs

A
  1. Projection
  2. After-image
  3. Adaptation
  4. Local sign
  5. Contrast
  6. Intensity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

projecting sensation to source of stimulation

A

Projection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

sensation persists in consciousness after cessation of stimulation

A

After-image

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

continuous stimulus- one gets used to it or ignores it

A

Adaptation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

ability to recognize point of application of stimulus

A

Local sign

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

sensation is affected by events which preceded or accompany it

A

Contrast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

dependent on number of receptors stimulated and rate of transmission

A

Intensity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

*Produce the somatic senses
*Widely distributed
receptors

A

General Senses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

*Produce the special senses
*Grouped in localized areas

A

Special senses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Receptor is any structure specialized to detect a stimulus (simple nerve ending or sense organ)

A

Sensory receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

receptors are free nerve endings; respond to a variety of stimuli as mechanical stretching, extremes in temperature to produce pain

A

Pain and temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

respond to stimuli that ‘deform’ or change their shape and placement and that move hair

A

Touch and Pressure receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

receptor for heavy touch, pressure, joint movements & skin stretching

A

Ruffini corpuscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

receptors for light touch & texture

A

Meissner corpuscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

tactile corpuscles in mucous membranes

A

Krause end bulb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

receptor for deep pressure, stretch, tickle, itch & vibration

A

Lamellated (pacinian) corpuscles

17
Q

Types of organic sensations

A
  • Hunger
  • Thirst
18
Q
  • projected to stomach
  • associated with rhythmic contractions and weakness, trembling, nausea, headache
  • NS is hyper-excitable
A

Hunger

19
Q
  • projected to pharynx
  • due to low water levels
  • extreme thirst leads to mental anguish
A

Thirst

20
Q

Three groups of stimuli in visceral sensations

A
  • Dilation/distension
  • Spasm/strong contraction
  • Chemical irritation
21
Q

occurs because of the common nerve pathways leading from skin and internal organs.

A

Referred pain

22
Q
  • is misinterpreted pain
    – Visceral impulse and cutaneous impulse share the same neurons to brain
    – Results in confusion
A

Referred pain

23
Q

Example of Referred pain

A

Angina pectoris
Pneumonia

24
Q

spasm of smooth muscle in coronary arteries of heart

A

Angine pectoris

25
Q

pain in abdomen

A

Pneumonia

26
Q

The special senses

A

Taste-Gustation
Smell-Olfaction
Vision
Hearing
Balance

27
Q

The Chemical Sense

A

Taste

28
Q

specific receptor cells for taste and smells

A

Chemoreceptors

29
Q

is the sensation of taste resulting from the action of chemicals on the taste buds

A

Gustation

30
Q

Small raised structures on the tongue that give it its rough texture and are importantfor taste

A

Lingual papillae

31
Q

4 types of Lingual papillae

A
  • Filiform
  • Foliate
  • Fungiform
  • Circumvallate
32
Q
  • at rear of tongue
  • contains 1/2 of taste buds
A

Circumvallate

33
Q

(no taste buds)
* most abundant

A

Filiform

34
Q

at tips & sides of tongue

A

Fungiform

35
Q

Physiology of taste

A
  1. To be tasted, molecules must dissolve in saliva
  2. 5 primary sensations: salty, sweet, sour, bitter & umami (taste of amino acids such as MSG)
  3. Taste is also influenced by food texture, aroma, temperature, and appearance.
36
Q

Factors that influced taste

A
  • Food texture
  • Aroma
  • Temperature
  • Appearance
37
Q

Projection pathways for taste

A

Innervation of the Taste Buds (Gustatory cells) –> Medulla oblongata –> Thalamus –> Postcentral gyrus of the cerebum

BIO108-Gen Physio (Iv and Josh Collab) (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions