CH. 16 - Senses Part 1

What is the correct order through which sound travels in the inner ear? 1. endolymph of cochlear duct 2. round window 3. perilymph of scala vestibule 4. vestibular membrane 5. oval window 6. perilymph of scala tympani 7. basilar membrane

5. oval window 3. perilymph of scala vestibule 4. vestibular membrane 1. endolymph of cochlear duct 7. basilar membrane 6. perilymph of scala tympani 2. round window (5, 3, 4, 1, 7, 6, 2)

What may be the cause of hyperopia?

A short eyeball

Which nerve fibers cross in the optic chiasma?

Axons of ganglion cells from nasal halves of both retinas

Which of these is most vulnerable to irreversible damage caused by a very loud noise?

Cochlear hair cells

To view close objects, the ciliary muscle will _____, the suspensory ligament will _____, and the lens will become more _______.

Contract; Loosen; Rounded

How can a person perceive over 4,000 different odors?

Detectable odors are actually combinations of a smaller number of primary odors.

True or False: Encapsulated tactile receptors are found in the skin and consist of dendrites with no protective coat.

FALSE

True or False: Rods and cones face the light coming into the eye.

FALSE

True or False: The ability to not notice the smell of fish from the previous day is due to tonic receptors.

FALSE

Which of the following structures is deepest in the inner ear?

Membranous labyrinth

Which disorder of refraction is corrected with a concave lens?

Myopia

What structure is attached to the oval window and transfers vibration of the tympanic membrane to the inner ear?

Stapes

True or False: Otitis media is an infection of the middle ear

TRUE

True or False: The greater the receptor density, the greater the sensory acuity.

TRUE

True or False: The sense of taste is heavily influenced by the olfactory sense as well.

TRUE

True or False: Walking into a room and recognizing the smell of a favorite dish is an example of a sensation.

TRUE

True or False: When a generator (receptor) potential reaches threshold, an action potential will be produced.

TRUE

Why is visceral pain sometimes localized incorrectly?

Visceral sensory neurons travel along the same pathway as many somatic sensory neurons.

Damage to one eye will result in...

a lack of depth perception.

Perilymph is contained within the...

bony and membranous labyrinths.

After the thalamus, auditory nerve signals reach the...

primary auditory cortex.

If a receptor's receptive field is ___________, it allows for greater specificity of localization. (small or large)

small

A pressure receptor in the skin could be classified as a(n)

somatic sensory receptor.

As the number of cycles per second increases, the sound we perceive gets higher or lower?

the sound gets higher

The papillae that are fewest in number, but contain the most taste buds, are the _________ papillae.

vallate