Lab: General Sensation & Special Senses: Hearing and Equilibrium

Question 1

React to stimuli or changes within the body and in the external environment

Answer 1

Sensory receptors

Question 2

React to touch, pressure, pain, heat, cold, stretch, vibration, and changes in position and are distributed throughout the body

Answer 2

General senses

Question 3

Include sight, hearing, equilibrium, smell, and taste

Answer 3

Special senses

Question 4

React to stimulus in the external environment

Answer 4

Exterocepters

Question 5

Respond to stimuli arising within the body aka visceroceptors

Answer 5

Interoceptors

Question 6

Respond to internal stimuli but are restricted to skeletal muscles, tendons, joints, ligaments, and connective tissue coverings of bones and muscles

Answer 6

Proprioceptors

Question 7

Aka tactile receptors bc they respond to light touch

Answer 7

Meissners corpuscles

Question 8

Respond to deep pressure and stretch stimuli

Answer 8

Ruffini’s corpuscles

Question 9

Anatomically more distinctive and lie deepest on the dermis. Respond only when deep pressure is first applied

Answer 9

Pacinian corpuscles

Question 10

Respond to pain and temperature

Answer 10

Free or naked nerve endings

Question 11

Light touch receptor

Answer 11

Merkel discs and hair follicle receptors

Question 12

Sensory receptors act as this; change environmental stimuli into afferent nerve impulses

Answer 12

Transducers

Question 13

Sensory receptors have discrete locations and are characterized by clustering at certain points

Answer 13

Punctate distribution

Question 14

Composed of the auricle and the external acoustic meatus

Answer 14

External or outer ear

Question 15

The skin-covered cartilaginous structure encircling the auditory canal opening

Answer 15

Auricle or pinna

Question 16

Wax secreting glands

Answer 16

Ceruminous glands

Question 17

Short, narrow chamber carved into the temporal bone

Answer 17

External acoustic meatus or external auditory canal

Question 18

Vibrates at the exact frequency as the sound waves hitting it

Answer 18

Tympanic membrane aka eardrum

Question 19

3 ossicles that forms a lever system that amplifies and transmits the vibratory motion of the eardrum to the fluids of the inner ear via the oval window

Answer 19

Malleus (hammer), incus (anvil), and stapes (stirrup)

Question 20

Connects the middle ear to the nasopharynx. Opens when you yawn or swallow to relieve pressure in the middle ear

Answer 20

Pharyngotympanic or auditory tube previously called the Eustachian tube

Question 21

Bony chambers that make up the inner ear

Answer 21

Osseous or bony labyrinth

Question 22

Aqueous fluid that fills the osseous (bony) labyrinth

Answer 22

Perilymph

Question 23

A system that mostly follows the contours of the osseous labyrinth that is suspended in the perilymph

Answer 23

Membraneous labyrinth

Question 24

Viscous fluid in the membraneous labyrinth

Answer 24

Endolymph

Question 25

2 structures involved in equilibrium

Answer 25

Vestibule and semicircular canals

Question 26

Contains the receptors for hearing- sensory hair cells & nerve endings of the cochlear nerve

Answer 26

Spiral organ (of Corti)

Question 27

A division of the vestibulocochlear nerve

Answer 27

Cochlear nerve

Question 28

Forms the floor of the cochlear duct where the hair cells rest

Answer 28

Basilar membrane

Question 29

Gelatinous membrane where the hair cells project into

Answer 29

Tectorial membrane

Question 30

The roof of the cochlear duct

Answer 30

Vestibular membrane

Question 31

The endolymph-filled chamber of the cochlear duct

Answer 31

Scala media