Spinal Nerves (Exam 3)

Question 1

Type of motor response that occurs as the result of some type of sensory stimulus that takes place without conscious control

Answer 1

Reflexes

Question 2

Simplest type of reflex

Answer 2

Monosynaptic reflex

Question 3

A monosynaptic reflex involves a

Answer 3

Sensory neuron synapsing with a motor neuron

Question 4

A monosynaptic reflex is also called a

Answer 4

Stretch reflex, initiated by the stretch of a skeletal muscle

Question 5

In a motorsynaptic reflex an impulse is carried by the

Answer 5

Sensory neuron into spinal cord, sensory neuron synapses with motor neuron in anterior horn, motor neuron causes contraction

Question 6

A polysynaptic reflex involves

Answer 6

3 neuron in series

Question 7

In a polysynaptic reflex, a sensory neuron

Answer 7

Carries some kind of painful stimulus from skin to the spinal cord, interneurons recruit muscles to remove the body part from painful stimulus

Question 8

Why do intercostal nerves remain segmented?

Answer 8

Intercostal muscles perform simple functions

Question 9

The muscles of upper and lower extremities perform…

Answer 9

Complex, graded functions

Question 10

Joining of spinal nerves to form nerves comprised of more than one level of the spinal cord

Answer 10

Nerve plexus

Question 11

Brachial plexus delivers…

Answer 11

Motor to and sensory from the lower extremity

Question 12

The lumbosacral plexus delivers motor to and sensory from the

Answer 12

Lower extremities

Question 13

Plexuses are formed from

Answer 13

Mixed spinal nerves

Question 14

The nerves plexuses produce are

Answer 14

Comprised of motor and sensory fibers

Question 15

Brachial plexus is formed by the

Answer 15

Anterior rami of spinal nerves C5-T1

Question 16

The brachial plexus extends from the

Answer 16

Lower neck, between clavicle and 1st rib, then to axilla

Question 17

Innerverates the skeletal muscles of the upper extremity and carries sensation from skin of upper extremity

Answer 17

Brachial plexus

Question 18

Anterior rami of C5 and C6 join to form the

Answer 18

Superior trunk

Question 19

The anterior rami of C8 and T1 joint to form

Answer 19

Inferior trunk

Question 20

The anterior ramus of _ forms middle trunk

Answer 20

C7

Question 21

The posterior branches of all three trunks form…

Answer 21

Posterior cord

Question 22

Anterior branches of the superior and middle trunks form

Answer 22

Lateral cord

Question 23

The anterior branch of inferior trunk forms the

Answer 23

Medial cord

Question 24

The posterior cord gives rise to the

Answer 24

Radial and axillary nerves

Question 25

The lateral cord gives rise to the

Answer 25

Musculocutaneous nerve and part of median nerve

Question 26

The medial cord gives rise to the

Answer 26

Ulnar nerve and part of the median nerve

Question 27

Axillary nerve spinal cord levels

Answer 27

C5 and C6

Question 28

Musculocutaneous nerve spinal cord levels

Answer 28

C5 C6 C7

Question 29

Radial nerve spinal cord levels

Answer 29

C5, C6, C7, C8, T1

Question 30

Median nerve spinal cord level

Answer 30

C6 C7 C8 T1

Question 31

Ulnar nerve spinal cord level

Answer 31

C8, T1

Question 32

Nerves of upper extremity: Axillary Nerve functions

Answer 32

Shoulder Abduction and shoulder external rotation;

Sensation of skin of lateral shoulder

Question 33

Musculocutaneous nerve functions

Answer 33

Flexion at elbow, supination; sensory from skin of lateral forearm

Question 34

Radial nerve function

Answer 34

Extension at elbow, wrist and fingers; supination of the forearm

Question 35

Radial nerve sensory function

Answer 35

Sensory from skin of posterior arm, forearm, and hand

Question 36

Functions of the median nerve

Answer 36

Flexion at wrist, flexion of fingers, and pronation

Question 37

Median nerve sensory function

Answer 37

Sensory from skin of lateral palm, digits 1-3 and 1/2 of digit 4.

Question 38

Ulnar nerve functions

Answer 38

Finger abduction and adduction

Question 39

Ulnar nerve sensory function

Answer 39

Sensory from skin of medial palm,pinky, and 1/2 of ring finger

Question 40

Combo of lumbar plexus and sacral plexus

Answer 40

Lumbosacral plexus

Question 41

Femoral nerve spinal cord levels

Answer 41

L2-L4

Question 42

Main functions of femoral nerve

Answer 42

Flex the hip and extend the knee

Sensory from skin of anterior thigh and medial leg

Question 43

Spinal cord Levels of the obturator nerve

Answer 43

L2-L4

Question 44

Fucntions of the obturator nerve

Answer 44

Hip adduction, sensory from skin of superior medial thigh

Question 45

Main action performed by muscles innervated by obturator nerve

Answer 45

Hip adduction

Question 46

Tibial nerve and common fibula nerve joined by connective tissue is known as

Answer 46

Sciatic nerve

Question 47

Tibial nerve spinal cord levels

Answer 47

L4-S3

Question 48

Main functions of the tibial nerve

Answer 48

Hip extension, knee flexion, plantar flexion, and toe flexion; sensory from skin of sole to foot

Question 49

Common fibular (peroneal) nerve spinal cord levels

Answer 49

L4-S3

Question 50

Common fibular (peroneal) nerve main function

Answer 50

Motor to short head of biceps femoral, flex leg

Question 51

Superficial fibular (peroneal) nerve main functions

Answer 51

Eversion of foot, sensory from skin of dorsal foot except between first two toes

Question 52

Deep fibular (peroneal) nerve functions

Answer 52

Dorsiflex and inverts foot, extends the toes; sensory from skin of first two toes