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Gross Anatomy 2 > Final Exam: Proprioception > Flashcards

Final Exam: Proprioception Flashcards

1
Q

Asssesses body position in space

A

proprioception

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2
Q

What is the function of the golgi tendon organs

A

joint angle and tendon tension

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3
Q

Proprioception is carried by conscious/unconscious pathways that terminate in the cerebral cortex

A

conscious

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4
Q

Proprioception is carried by conscious/unconscious pathways that terminate at the cerebellum.

A

Unconscious

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5
Q

What is a CP deficit?

A

conscious proprioception deficit

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6
Q

T/F. proprioception cannot be tested in a paralyzed patient

A

f.

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7
Q

How is proprioception sent to the brain?

A

via afferent neurons in the dorsal column of the medial limniscus (DCML)

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8
Q

T/F. Axons of DCML are small and lightly myelinated.

A

F. Large and Heavily myelinated

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9
Q

How is sensation lost for an animal?

A

PMS

  1. proprioception
  2. motor
  3. Sensory
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10
Q

What are the 3 reasons for neurologic gait?

A
  1. Proprioceptive
  2. Vestibular
  3. Cerebellar
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11
Q

Where does conscious proprioception terminate?

A

Parietal lobe of the cerebrum in the somatosensory cortex

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12
Q

abnormal gait due to neurologic dysfunction

A

Ataxia

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13
Q

What are the two primary pathways for proprioception

A
  1. dorsal column

2. trigeminal pathway

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14
Q

What pathway of proprioception covers from the neck down?

A

dorsal column

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15
Q

What pathway of proprioception covers the face

A

trigeminal

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16
Q

Main purpose of this system is to present afferent information to cortex about body position

A

conscious proprioception

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17
Q

DCML pathway receptors:

A

Proprioceptors

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18
Q

What are the 3 afferent proprioceptors?

A
  1. skin mechanoreceptors
  2. Muscle spindles detect change in m. lenght
  3. Golgi tendon organs detect tension in tendons and joint capsules
19
Q

grand relayer of all things sensory

A

Thalamus

20
Q

Pelvic limb pathway travels though the fasciculus _____

A

gracilis

21
Q

Thoracic limb pathway traves through the fasciculus ______

A

cuneatus

22
Q

What is more lateral, the fasciculus gracilis or cuneatus?

A

cuneatus

23
Q

Proprioceptive fibers ascent the spinal cord ______ then secussates at the brain stem

A

Ipsilaterally

24
Q

What is the recipe for proprioception:

A
  1. receptor
  2. spinal cord segment
  3. fasciculus gracilis or fasciculus cuneatus
  4. decussation in the brain stem (medulla)
  5. carried to cerebral cortex (parietal lobe)
25
Q

You have an animal presenting with dec. CP of the right pelvic limb. provide a possible location of the lesion:

a. mechanoreceptive primary n. ending
b. lumbar intumescence
c. right fasciculus gracilis
d. parietal lobe
e. all of the above

A

e. all of the above

26
Q

Pathway of proprioception that is conscious proprioception from the face to cortex

A

Trigeminal pathway

27
Q

All proprioceptive info from one side of the body reache the same/opposite somatosensory cortex

A

Opposite

28
Q

Neurologic gate abnormality:

A

ataxia

29
Q

What type of gait do dogs have during atxia

A

wide swing phase of gait

longer stride with crouch appearance

30
Q

What test do you do to test proprioceptive deficits

A

Postural reaction tests

aka conscious proprioceptive tests (CP test)

31
Q

What are the 5 CP tests

A
  1. proprioceptive positioning
  2. Wheelbarrowing
  3. hopping
  4. hemistanding/walking
  5. placing
32
Q

What are the clinical signs of proprioceptive ataxia

A

abnormal postural reactions

failure to pass CP test

33
Q

Lesions to what 3 areas could cause vestibular ataxia?

A
  1. Vestibular nuclei
  2. CN VII
  3. Vestibular receptors
34
Q

What are the c/s of vestibular ataxia

A
  1. abnormal nystagmus
  2. head tilt
  3. head turn
  4. leaning
  5. falling
35
Q

Lesions to what would cause cerebellar ataxia

A

Cerebellum

36
Q

What are some C/S of cerebellar ataxia?

A

abnormal rate, range, and force of movement

37
Q

T/F in cerebellar ataxia there is no CP deficit.

A

T

38
Q

T/F in vestibular ataxia there is no CP deficit

A

T

39
Q

T/F vestibular ataxia causes paresis

A

F

40
Q

A lesion in the right parietal lobe would lead to CP deficits in the:

a. left thoracic limb
b. left pelvic limb
c. right thoracic limb
d. right pelvic limb
e. Both A and B
f. Both C and D

A

e.

41
Q

Does an animal with a cerebellar lesion have CP deficits?

a. yes
b. no

A

b. no

42
Q

Proprioception is often the first/last sense affected during compressive spinal injury

A

First

43
Q

What is the cascade of sensory loss in compressive spinal injury

A
  1. Proprioception
  2. motor
  3. superficial pain
  4. deep pain

Gross Anatomy 2 (27 decks)

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