Reflexes

Question 1

What does the Panniculus Reflex Test?

Answer 1

Integrity of receptors, lateral thoracic nerve, and spinal cord

Question 2

Another name for Panniculus Reflex Test?

Answer 2

Cutaneous Trunci Reflex

Question 3

Afferents of Panniculus

Answer 3

Superficial pain receptors

Question 4

Efferents run with?

Answer 4

Lateral thoracic nerve from segments C*/T1

Question 5

What do the efferents of the Panniculus cause?

Answer 5

Contraction of trunk m. bilaterally

Question 6

PLR–Afferent & efferent?

Answer 6

A: CN II (Optic) E: CN III (Occulomotor)

Question 7

Corneal Reflex–Afferent & efferent?

Answer 7

A: Ophthalmic Branch of V (Trigeminal) E: CN VI (Abducens)

Question 8

Palpebral Reflex–Afferent & efferent?

Answer 8

A: Maxillary Branch of V (Trigeminal) E: CN VII (Facial)

Question 9

What reflex is seen only in an abnormal animal during a recumbent neuro exam?

Answer 9

Crossed-Extensor Reflex

Question 10

Menace Response–Afferent & efferent?

Answer 10

A: CN II (Optic) E: CN VII (Facial)

Question 11

Panniculus/Cutaneous Trunci Reflex tests for damage where?

Answer 11

Between T2-L4

Question 12

Is Withdrawal Reflex seen in normal animals?

Answer 12

Yes

Question 13

What is the Withdrawal Reflex?

Answer 13

Withdrawal of limb being stimulated

Question 14

When in the Withdrawal Reflex altered?

Answer 14

Damage to spinal cord, spinal root, peripheral nerve or muscle

Question 15

Withdrawal Reflex Afferents

Answer 15

Propriceptors (also some nociceptors & thermoreceptors)

Question 16

Is the crossed-extensor reflex normal in a standing animal?

Answer 16

Yes

Question 17

Is the crossed-extensor reflex normal in a recumbent animal?

Answer 17

No

Question 18

What injury is associated with the crossed-extensor reflex?

Answer 18

Spinal cord damage cranial to the limb that shows the reflex.

Question 19

Perineal Reflex tests what?

Answer 19

Integrity of segments S1-S3 and pudendal n.

Question 20

Is the Perineal Reflex seen in normal animals?

Answer 20

Yes

Question 21

What is the afferent of the Perineal Reflex?

Answer 21

Pudendal nerve

Question 22

What will occur when performing the perineal reflex on an animal?

Answer 22

Tightening of the anal sphinctor

Question 23

When is the perineal reflex not seen?

Answer 23

Animal with spinal cord disease, or a damaged pudendal nerve

Question 24

Myotatic Reflex Afferents

Answer 24

Muscle Spindle receptors sensing muscle stretch

Question 25

How can you test the Deep Pain Response?

Answer 25

Pinch nail bed

Question 26

What does the Deep Pain Response test?

Answer 26

Deep pain (nociceptive pathways) cranial to the segments that innervate the limb you are testing

Question 27

Is Deep Pain Response seen in normal animals?

Answer 27

Yes

Question 28

When is deep pain response absent?

Answer 28

Animals with lesion cranial to the limb being tested

Question 29

What does it mean when there is no deep pain response?

Answer 29

Severe spinal cord injury