Final Exam

Question 1

Somatic sense are classified into 3 physiological types. What are they?

Answer 1

Mechanoreceptive, Thermoreceptive, Pain receptive

Question 2

Mechanoreceptive sense include both of these senses

Answer 2

Tactile, position

Question 3

Thermoreceptive sense includes both of these senses

Answer 3

Heat, cold

Question 4

Pain sense includes this sense

Answer 4

Any factor that damages the tissues

Question 5

Tactile senses include

Answer 5

Touch, pressure, vibration, and tickle senses

Question 6

Position senses include

Answer 6

Static position and rate of movement senses

Question 7

Exteroreceptive sensations relate to

Answer 7

Sensations from the surface of the body

Question 8

Proprioceptive sensations relate to

Answer 8

Sensations about the physical state of the body

Question 9

Deep sensations relate to

Answer 9

Sensations involving muscle or bone, deep pressure, pain and vibration

Question 10

Visceral sensations relate to

Answer 10

Sensations involving the internal organs

Question 11

Where are free nerve endings found?

Answer 11

Skin, many other tissues

Question 12

What do free nerve endings do?

Answer 12

Detect touch and pressure

Question 13

This is a touch receptor with great sensitivity

Answer 13

Meissner’s Corpuscle

Question 14

This receptor adapts in a fraction of a second after they are stimulated (A fibers), which means that they are particularly sensitive to movement of objects over the surface of the skin as well as to low-frequency vibration.

Answer 14

Meissner’s Corpuscle

Question 15

Free Nerve endings has two types of fibers what are they?

Answer 15

A Delta, C Fibers

Question 16

A delta fibers of FNE are responsible for what senses?

Answer 16

Touch and pressure

Question 17

C fibers of FNE are responsible for what senses?

Answer 17

Tickle and touch

Question 18

These respond to low frequency vibrations and discriminate between points touched and textures. They are also rapid adapting

Answer 18

Meissner’s Corpuscle

Question 19

Meissner’s corpuscles usually also contain large numbers of expanded tip tactile receptors, one type of which is?

Answer 19

Merkel Disc’s

Question 20

These receptors differ from Meissner’s corpuscles in that they transmit an initially strong but partially adapting signal and then a continuing weaker signal that adapts only slowly. Therefore giving steady-state signals that allow one to determine continuous touch of objects against the skin.

Answer 20

Merkel Disc’s

Question 21

Merkel’s discs are often grouped together in a

receptor organ called the

Answer 21

Iggo Dome receptor

Question 22

The entire group of Merkel’s discs is innervated by a single large myelinated nerve fiber this is known as

Answer 22

Alpha(A) beta fiber

Question 23

Slight movement of any hair on the body stimulates a nerve fiber entwining its base. Thus, each hair and its basal nerve fiber, called THIS, are also a touch receptor.

Answer 23

Hair-end organ

Question 24

Located in the deeper layers of the skin and also in still deeper internal tissues are many of THESE, which are multibranched, encapsulated
endings

Answer 24

Ruffini endings

Question 25

These endings adapt very slowly and, therefore, are important for signaling continuous states of deformation of the tissues, such as heavy prolonged touch and pressure signals. They are also found in joint capsules and help to signal the degree of joint rotation.

Answer 25

Ruffini endings

Question 26

THESE lie both immediately beneath the skin and deep in the fascial tissues of the body. They are stimulated only by rapid local compression of the tissues because they adapt in a few hundredths of a second. Therefore, they are particularly important for detecting tissue vibration or other rapid changes in the mechanical state of the tissues.

Answer 26

Pacinian Corpuscles