Ch8 Pearson

ch8-31questions

Which of these structures is part of the system that produces and drains​ tears?

lacrimal gland

Which of the following is the auditory ossicle that attaches to the tympanic​ membrane?

malleus​ (hammer)

What part of the inner ear contains receptors for dynamic​ equilibrium?

semicircular canals

Where are olfactory receptors​ located?

the superior region of the nasal cavity

structures that are part of the middle​ ear:

Pharyngotympanic tube, Malleus

Select the structure that is involved in the perception of equilibrium.

Vestibule.

Which structure is responsible for equalizing the pressure between the middle ear and the outside of your​ body?

Pharyngotympanic tube.

Which part of the inner ear is activated by a sound heard at 30​ Hertz?

The portion of the spiral organ of Corti located near the apex of the cochlear duct.

How do organs of equilibrium help us maintain our​ balance?

The macula sends information on head position and the crista ampullaris sends information on rotation movements to the cerebellum for integration.

Why is it harder to determine where a sound originates when one auditory canal is completely blocked with​ earwax?

Since one ear is functionally​ deaf, the brain​ can't compare input from both cochleae to localize a given sound.

What sensation allows someone to enjoy the​ "beef taste" of a​ steak?

umami

Which of these is part of the sensory layer of the​ eye?

retina

Which of the following structures refract light before it hits the​ retina?

​cornea, humors, and lens

Which reflex constricts pupils when we view close​ objects?

accommodation pupillary reflex

Outer ear function:

hearing

Middle ear function:

hearing

Inner ear function:

both hearing and equilibrium

The sense of equilibrium responds to movements of the head. It is divided into two​ types--static and dynamic equilibrium. Describe and give an example of these two types of equilibrium.

Static equilibrium monitors head position when the body is not moving.

Dynamic equilibrium monitors angular or rotational movements of the head when the body is moving.

An example of static equilibrium occurs when tilting the head forward.

An example of dynamic equilibrium occurs when a figure skater spins.

The bending of dynamic equilibrium receptors is caused by the gelatinous cap called the______.

Capula

The bending of static equilibrium receptors is caused by tiny stones called______.

Otoliths

Dynamic equilibrium receptors are located in the vestibular apparatus branch called_____.

Semicircular canals

Static equilibrium is detected by receptors within membranous sacs called_____.

Maculae

Dynamic equilibrium is detected by receptor regions called________.

Crista ampullaris

Static equilibrium receptors are located in the vestibular apparatus branch called_____.

Vestibule

Order of transmission of sound

Tympanic membrane, Malleus, Incus, Stapes, Oval Window, Cochlea, Organ of Corti

Hearing receptors are embedded in the_________.

tectorial membrane

Sound waves cause the ____________ to vibrate first.

basilar membrane

Hearing receptors are called_______.

hair cells

Hearing receptors are connected to the ________ by supporting cells.

basilar membrane

The structure that bends the hearing receptors but does not vibrate itself is the _________.

tectorial membrane

As a result of this​ vibration, _________ ​is/are bent.

hair cells