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Flashcards in Senses Deck (50):
1

Special senses

Stems from receptors associated with sensory organs such as eyes and ears

2

Chemoreceptor

Stimulated by binding or certain chemicals

3

Pain receptor

Sensory nerve ending that transmits impulses interpreted as pain

4

Proprioreceptor

Nerve ending that senses changes in muscle tension

5

Photoreceptor

Nerve ending sensitive to light energy

6

Meissners corpuscle

Receptors in dermal papillae

7

Perception

Mental awareness of sensory stimulation

8

Sensory adaptation

Sensory receptors becoming unresponsive along CNS pathways leading to sensory regions of cerebral cortex after constant repeated stimulation

9

Visceroreceptive sense

Detecting changes in viscera

10

Hypoxia

Deficiency of oxygen in tissues

11

Serotonin

Vasoconstrictor that blood platelets release when blood vessels break controlling bleeding
Neurotransmitter

12

Muscle spindle

Modified skeletal muscle fiber that responds to changes in muscle length

13

Stretch reflex

Muscle contraction in response to stretching of muscle

14

Mechanoreceptor

Sensitive to mechanical stimulation
Changes in pressure or tension

15

Baroreceptor

Sensory receptor in blood vessel wall stimulated by changes in pressure

16

Pacinian corpuscle

Deeper receptors in dermis

17

Sensation

Feeling resulting from brains interpretation of sensory nerve impulses

18

Projection

Brain causes sensation to seem to come from the region of the body being stimulated

19

Exteroreceptive senses

Associated with changes at body surface

20

Ischemia

Deficiency of blood in a body part

21

Referred pain

Pain feels as if originating from part other than site being stimulated

22

Enkephalins

Neuropeptide in brain and spinal cord that inhibits pain impulses

23

Golgi tendon organs

Sensory receptors in tendons close to muscle attachments involved in reflexes to maintain posture

24

Olfactory receptor cells

Receptors that detect smell

25

Taste buds

Organ containing receptors associated with taste

26

Tympanic membrane

Thin membrane covers auditory canal and separates outer ear from middle ear
Ear drum

27

Auditory ossicle

Bone of middle ear

28

Oval window

Opening between the stapes and inner ear

29

Auditory tube

Tube that connects middle ear cavity to pharynx
Eustachian

30

Labyrinth

System of connecting tubes in inner ear including cochlea, vestibule, semicircular canals

31

Semicircular canals

Tubular structure in inner ear that contains receptors providing that sense of dynamic equilibrium

32

Papillae

Tiny projections

33

Auricle

Ear like structures

34

Ceruminous glands

Make ear wax

35

Cochlea

Part of inner ear that has hearing receptors

36

Free nerve endings

Simplest receptors common in epithelial tissues
Itching sensation

37

Nociceptors

Pain receptors

38

Acute pain fibers

Thin myelinated nerve fibers

39

Chronic pain fibers

Thin Unmyelinated nerve fibers

40

Olfactory bulbs

Structures that lie on either side of the crista Galli of ethmoid bone

41

Umami

Savory, meaty, pungent

42

Pinna

Auricle

43

Middle ear/ tympanic cavity

Air filled space in temporal bone that separates the outer and inner ears

44

External acoustic meatus

S shaped tube leads inwards in ear

45

Malleus

Maintains conical shape
Vibrates incus

46

Incus

Passes movement to stapes

47

Stapes

Moves fluid within the inner ear

48

Tympanic reflex

Muscles contract after loud sound
Bridge of ossicles become rigid

49

Eustachian tube

Connects middle ear to throat

50

General senses

Involves receptors widely distributed throughout body