Motor system Flashcards Preview

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Flashcards in Motor system Deck (17)
1

sensory adaptation

decrease in responsivenes during continued stimulation like heartbeat

2

mechanoreceptors

sense physical deformation caused by pressure, touch, stretch, motion, sound

3

chemoreceptors

receptors for solute concentration and specific molecule receptors

4

electromagnetic receptors

detect various forms of electromagnetic energy such as visible light, electricity, and magnetism

5

photoreceptors

electromagnetic receptors that detect the radiation we know as visible light often organized into eyes

6

thermoreceptors

respond to hear or cold and are present in the upper dermis

7

nociceptors

pain receptors; class of naked dendrites in the outer layer of skin of epidermis

8

hypodermis

below the epidermis and dermis of skin

9

statocysts

invertebrates; sensory organs that contain mechanoreceptors functioning in equilibrium

10

statolith

invertebrate statocysts contain these grains of sand on ciliated receptor cells

11

outer ear

consists of external pinna and auditory canal

12

middle ear

3 small bones are hammer (malleus), anvil (incus), and stirrup (stapes) that transmits vibrations to oval window

13

eustachian tubes

connects with pharynx and equalizes pressure between middle ear and atmosphere

14

inner ear

labyrinth of fluid filled chambers within temporal skull bone

15

semicircular canals

part of inner ear; functions in equilibrium

16

cochlea

part of inner ear; organ of corti mechanoreceptor hair cells respond with auditory nerve after basilar membrane vibrates

17

frequency

sensory neurons associated with basilar membrane regions send most action potentials along auditory nerve to specific auditory area