Chapter 10 - Sensory Systems

Question 0

How is stimulus intensity coded?

Answer 0

Frequency of action potentials

Number of receptors activated

Question 1

Sensory unit

Answer 1

A single afferent neuron and all the receptors it innervates

Question 2

Labeled lines

Answer 2

Facilitate the perception of a sensory modality.

They are specific neural pathways carrying specific sensory modalities.

Question 3

Nociceptors

Answer 3

Somatosensory receptors that detect tissue damaging stimuli.

Question 4

What type of neurons detect changes in our internal and external environment?

Answer 4

Sensory neurons

Question 5

A stronger stimulus result in action potentials that are _________.

Answer 5

More frequent

Question 6

Mechanoreceptors

Answer 6

Detect changes in pressure, sound waves and acceleration

Question 7

What is the relay Center which all Sensory Pathways go through ?

Answer 7

The Thalamus

Question 8

Thalamus

Answer 8

Relay center for sensory pathways

Question 9

The lens

Answer 9

Changes shape as it bends light, focuses light appropriately on the photoreceptors

Question 10

Dogs vision

Answer 10

See fewer colors but have better vision in low light

Question 11

Damage to ________ may lead to presbycusis.

Answer 11

Stereo cilia

Question 12

Presbycusis

Answer 12

Hearing loss with aging

Question 13

Taste

Answer 13

Has all four transduction membranes but responds more strongly to one specifically

Question 14

What is Sensory Transduction?

Answer 14

Sensory receptors converting the beefy of stimulation into receptor potentials

Question 15

Hair cells in utricle detect what?

Answer 15

Linear acceleration forward and backward

Question 16

Hair cells in the semicircular canal detect what?

Answer 16

Angular acceleration

Question 17

What Type of Neuron in the thalamus comminuted sensory information to the cerebral cortex?

Answer 17

Third-order neuron

Question 18

Where is the somatosensory cortex found?

Answer 18

Parietal lobe

Question 19

Where is the visual cortex found?

Answer 19

Occipital lobe

Question 20

Where is the auditory cortex found?

Answer 20

Temporal lobe

Question 21

Where is the gustatory nucleus located?

Answer 21

Brain stem

Question 22

Location of the gustatory cortex?

Answer 22

Parietal lobe

Question 23

Location of the medial feniculaye body?

Answer 23

Thalamus

Question 24

Light waves refract as they pass through

Answer 24

The cornea and lens

Question 25

The cornea and lens are ______ surfaces that cause light to converge on a ______.

Answer 25

Convex ; focal point

Question 26

Accommodation

Answer 26

Focusing on light nearby

Question 27

Myopia

Answer 27

Light from distance is focused on the retina

Question 28

Hyperopia

Answer 28

Light nearby focused behind the retina

Question 29

Astigmatism

Answer 29

Irregularities in the structure of the cornea and lens

Question 30

Ganglion cells

Answer 30

First neurons to detect action potentials for visual information

Question 31

Retinal pigmented epithelium

Answer 31

Absorbs light waves

Question 32

What is the site of highest visual acuity?

Answer 32

The fovea