Anatomy & Phys: Lab 22 - General Sensation

a. pain receptors

Adaptation is a common property of general sensory receptors. Some receptors, however, do not adapt. Which type of receptor below does not adapt? a. pain receptors b. lamellar corpuscles c. temperature receptors d. receptors for light touch

d. an elaborate encapsulated nerve ending

Lamellar corpuscles are an example of ________. a. a nerve ending associated with a tactile disc b. a simple free nerve ending c. a nerve ending associated with a hair follicle d. an elaborate encapsulated nerve ending

c. deep pressure and vibrations

Lamellar corpuscles respond to __________. a. light touch b. pain and temperature c. deep pressure and vibrations

c. stretch

Stimulus to the muscle spindle elicits the ________ reflex. a. consensual b. ciliospinal c. stretch d. plantar

d. "brain freeze"

Which of the following is an example of referred pain? a. stabbing pain in the forearm b. a fly bite on your leg c. a burn in your mouth from eating hot pizza d. "brain freeze"

d. You might burn your leg by putting it too close to the campfire.

Which of the following might occur if you lacked temperature receptors in the leg? a. You would be insensitive to scratches if you walked through a briar patch wearing shorts. b. You couldn't feel a bug bite your leg. c. You might fall, because your brain isn't getting enough information about the leg and thigh muscles. d. You might burn your leg by putting it too close to the campfire.

a. free nerve endings

Which of the following receptor detects pain sensations? a. free nerve endings b. lamellated corpuscle c. Meissner's corpuscle d. Merkel discs

b. Tactile localization

__________ is the ability to determine where on the body the skin has been touched. a. Two-point threshold b. Tactile localization

b. touch

General sensory receptors respond to many stimuli, including ________. a. sound b. touch c. smells d. light

c. lips

Which area listed below has the smallest two-point threshold? a. back of hand b. back of neck c. lips d. palm of hand

muscle spindle

Which of the following is a proprioceptor? Meissner's corpuscles lamellar corpuscles muscle spindle Merkel discs

?

Which of the following is a receptor for light touch? a. hair follicle receptor b. lamellar corpuscle c. free nerve ending d. bulbous corpuscle

a. proprioceptor

A golgi tendon organ is an example of a(n) ________. a. proprioceptor b. exteroceptor c. visceroceptor

True

A map of the sensory receptors for touch, heat, cold, and pain shows that they are not evenly distributed throughout the body. True False

b. This could be an example of referred pain indicating a heart attack.

An individual arrives at the emergency department complaining of pain in the left shoulder and upper extremity. The patient is whisked away into the first available room. Explain why these symptoms could be life-threatening. a. The pain may indicate a rotator cuff tear requiring surgery. b. This could be an example of referred pain indicating a heart attack. c. The pain may indicate a bone fracture that can in turn result in prolonged nerve damage if it does not heal correctly. d. This could be the result of a life-threatening infection resulting in inflammation and pain

True

General sensory receptors are widely distributed throughout the body and respond to, among other things, touch, pain, stretch, and changes in position. True False

a. receptors for pain

From your own experience (and from reading through this exercise!), which would you predict to be the most numerous cutaneous receptor type? a. receptors for pain b. receptors for heat c. receptors for touch d. receptors for cold

c. in internal visceral organs

Interoceptors are located ________. a. in skeletal muscles, tendons, and joints b. close to the body surface c. in internal visceral organs

False

Pain is always perceived in the same area of the body that is receiving the stimulus. True False

a. Exteroceptors

Patients with Hansen's disease (also known as "leprosy") initially experience loss of cutaneous sensation in their fingertips and toes. Which types of sensory receptors are affected by this disease? a. Exteroceptors b. Interoceptors c. Proprioceptors

d. pain perceived as arising in one area when a different area is receiving the painful stimulus

Referred pain is ________. a. pain localized to the stomach b. pain localized to a particular area of the skin c. pain from a specific skeletal muscle d. pain perceived as arising in one area when a different area is receiving the painful stimulus

c. exteroreceptors

Sensory receptors can be classified according to their source of stimulus. __________ are found close to the body surface and react to stimuli in the external environment. a. Visceroreceptors b. proprioreceptors c. exteroreceptors d. interoreceptors

c. in the skin

Tactile corpuscles and tactile (Merkel) discs are located ________. a. in the brain b. in the viscera c. in the skin d. around bones and tendons

c. in the dermal papillae of hairless skin

Tactile corpuscles respond to light touch. Where would you expect to find tactile corpuscles? a. in the uppermost portion of the epidermis b. deep within the dermal layer of hairy skin c. in the dermal papillae of hairless skin d. in the hypodermis of hairless skin

c. Simple pain receptors are the most numerous

What is true of cutaneous receptors? a. Each can detect several different types of stimuli. b. Touch receptors cluster on the ventral forearm and palm of the hand. c. Simple pain receptors are the most numerous. d. Pain and touch receptors are evenly distributed in the skin all over the body.

a. adaptation

When a stimulus is applied for a prolonged period, the rate of receptor discharge slows, and conscious awareness of the stimulus declines. This phenomenon is known as __________. a. adaptation b. accommodation c. adjustment d. discernment

a. the density of touch receptors

The two-point discrimination test is used to determine ________. a. the density of touch receptors b. the ability to detect which portion of the skin has been touched, the density of touch receptors, and the distribution of temperature receptors c. the distribution of temperature receptors d. the ability to detect which portion of the skin has been touched

d. tactile (Merkel) disc

This receptor for light touch is made up of a free nerve ending associated with a special epidermal cell. a. bulbous corpuscle b. hair follicle receptor c. tactile corpuscle d. tactile (Merkel) disc

a. Areas with the most accurate touch localization have the smallest two-point thresholds.

What is the relationship between the accuracy of a subject's tactile localization and the results of the two-point discrimination test? a. Areas with the most accurate touch localization have the smallest two-point thresholds. b. Areas with the most accurate touch localization have the largest two-point thresholds, and areas with the least accurate touch localization have the smallest two-point thresholds. c. Areas with the least accurate touch localization have the smallest two-point thresholds. d. Areas with the most accurate touch localization have the largest two-point threshol

a. The location where the subject detects two points at their smallest distance apart contains the greatest density of touch receptors.

What is true about the two-point threshold test? a. The location where the subject detects two points at their smallest distance apart contains the greatest density of touch receptors. b. The location where the subject detects two points at their smallest distance apart contains the least density of touch receptors, and the area of the greatest density of touch receptors has the least ability to detect touch. c. The location where the subject detects two points at their smallest distance apart contains the least density of touch receptors. d. The area of the greatest density of touch receptors has the least ability to detect touch.

in the skin

Where are cutaneous receptors located? in smooth muscle in the skin in the brain in skeletal muscles