Neuroanatomy: Spinal Cord Reflexes

Front 1

The three types of reflexes include:

Back 1

Muscle stretch, Golgi tendon organ reflex and flexir withdrawl reflex

Front 2

Senosry receptor involved with muscle stretch and location

Back 2

Muscle spindle; muscle

Front 3

Motor nueron involved with muscle stretch reflex

Back 3

Gamma motor neuron in the ventral horn

Front 4

Muscle stretch reflexes are ___synaptic

Back 4

mono

Front 5

An example of a muscle stretch reflex is the ______ which stretches the _____ and is a ______

Back 5

knee-jerk; quadricpes muscle; DTR

Front 6

The muescle spindle excvites sensory neurons located in the ____

Back 6

DRG

Front 7

Hyporeflexia

Back 7

Diminshment of DTR due to peripheral nerve injury

Front 8

Areflexia

Back 8

Adbsence of DTR

Front 9

Hyperreflxia

Back 9

Reflex becomes hyperactive

Front 10

Triceps reflex tests ____ innervated by _____ and ____ peripheral nerve

Back 10

tricpes brachii, C6,C7, radial (C7-C8)

Front 11

Biceps reflex tests ____ innervated by _____ and ____ peripheral nerve

Back 11

biceps brachii, C5,C6, musculocutaneous

Front 12

Patellar reflex tests ____ innervated by _____ and ____ peripheral nerve

Back 12

quadrceps femoris, L3/L4, femoral nerve

Front 13

Achilles reflex tests ____ innervated by _____ and ____ peripheral nerve

Back 13

gastroencemus and soleus, S1 and S2, tibial

Front 14

The muscle stretch reflex is known as the ____ loop

Back 14

Gamma loop

Front 15

How does one assess muscle tone?

Back 15

Passively extend and flex the limbs

Front 16

What are the components of an upper motor lesion?

Back 16

Spastic paralysis with hyperrelfexia

Front 17

What does a flexor-withdraw reflex involve?

Back 17

Skin receptors and movement of a whole .limb that experiences painful stimulus

Front 18

Mechanism of flexor-withdraw

Back 18

Pain receptors activate excitatory interneurons which synapse with flexor muscles to withdraw the limb

Front 19

A Golgi tendon reflex provides information on ___________

Back 19

The amount of tension in a muscle

Front 20

A Golgi tendon reflex leads to ________

Back 20

Relaxation of the muscle since there is an inihibition of the motor nuerons

Front 21

The muescle spindle excvites sensory neurons located in the ____

Back 21

DRG

Front 22

Hyporeflexia

Back 22

Diminshment of DTR due to peripheral nerve injury

Front 23

Areflexia

Back 23

Adbsence of DTR

Front 24

Hyperreflxia

Back 24

Reflex becomes hyperactive

Front 25

Triceps reflex tests ____ innervated by _____ and ____ peripheral nerve

Back 25

tricpes brachii, C6,C8, radial

Front 26

Hypo or are reflexia indicate _______ damage

Back 26

peripheral nerve or spinal cord segment

Front 27

Hyper reflexia indicates ____ damage

Back 27

descending neural tract since desceding systems inhibt segmental reflexs

Front 28

Define: Spasticity

Back 28

Increased muscle tone (hypertonia)

Front 29

Define: clonus

Back 29

Prolonged oscillation of contraction and relaxation of the limb