Exam 3: Unit VI - Thoracic Spinal Nerves & Lumbar Plexus

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45 Terms

1
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There are ____ pairs of thoracic nerve roots

12

2
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Medial branches of the thoracic posterior primary rami supply which muscles?

-semispinalis (T1-T6)

-longissimus (T7-T12)

-multifidi

3
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Lateral branches of the thoracic posterior primary rami supply which muscles?

-longissimus

-iliocostalis

-levator costarum

4
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(TQ) The _____ nerve is the largest of the thoracic nerves

subcostal

5
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Medial branches of the lumbar posterior primary rami supply the ____

multifidi

6
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Lateral branches of the lumbar posterior primary rami supply the _____

erector spinae group

7
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Posterior primary rami of lumbar spinal nerves are purely _____

motor

8
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There will be a white rami communicans associated with preganglionic sympathetic fibers from _____

T1-L2

9
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The lumbar plexus is formed by anterior primary rami of _____ and part of L4

L1-L3

10
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L1-L4 supplies _____

quadratus lumborum

11
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L1-L2 supplies ____

psoas minor

12
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L2-L4 supplies ____

psoas major

13
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What are the 6 nerves of the lumbar plexus?

1. iliohypogastric

2. ilioinguinal

3. genitofemoral

4. lateral cutaneous nerve of the thigh

5. femoral nerve

6. obturator nerve

14
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Iliohypogastric nerve contains fibers from ___ and ___

T12 ; L1

15
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Lateral cutaneous branch of the iliohypogastric nerve supplies the _____ region

posterolateral gluteal

16
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After giving off the lateral cutaneous branch, the iliohypogastric nerve gives off the anterior cutaneous branch which supplies skin on the ______

pubic region

17
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What 2 muscles do the iliohypogastric and ilioinguinal nerve supply?

1. internal abdominal oblique

2. transverse abdominal

18
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Ilioinguinal nerve contains fibers from ___ and ___

T12 ; L1

19
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The ilioinguinal nerve enters and is transmitted through the ______

inguinal canal

20
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True or False? The ilioinguinal nerve supplies the same muscles as the iliohypogastric nerve

true

21
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Genitofemoral nerve contains fibers from ___ and ___

L1 ; L2

22
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Genital branch of the genitofemoral nerve provides motor supply to the _____ muscle

cremaster

23
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Femoral branch of the genitofemoral nerve supplies the skin on the _______ thigh

upper anterior

24
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Lateral cutaneous nerve of the thigh contains fibers from ___ and ___

L2 ; L3

25
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The lateral cutaneous nerve of the thigh is purely _____

sensory

26
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Lateral cutaneous nerve of the thigh supplies the skin of the ____ superior to the knee

lateral thigh

27
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Femoral nerve contains fibers from ____, ____ and ____

L2 ; L3 ; L4

28
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______ is the largest branch of the lumbar plexus

femoral nerve

29
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(TQ) The femoral nerve gives off branches only in the _____ and femoral triangle

abdomen

30
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(TQ) Within the abdomen, the femoral nerve gives off muscular branches to the ____ and ____, and also sends some fibers to the femoral artery

iliacus ; pectineus

31
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Anterior division of the femoral nerve gives rise to what 3 nerves?

1. intermediate cutaneous nerve of the thigh

2. medial cutaneous nerve of the thigh

3. nerve to the sartorius

32
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Intermediate cutaneous nerve of the thigh supplies:

skin on anterior thigh

33
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The lateral branch of the intermediate cutaneous nerve of the thigh communicates with the ____ branch of the genitofemoral nerve

femoral

34
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Medial cutaneous nerve of the thigh sends branches to supply the skin of the medial ____, medial ____ and across to the lateral side of the patella

thigh ; knee

35
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Some branches of the medial cutaneous nerve of the thigh will supply skin on the medial leg through communications with the _____ nerve

saphenous

36
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The ___ nerve and ____ both supply the medial thigh

obturator ; medial cutaneous nerve of the thigh

37
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True or False? Intermediate and medial cutaneous nerves of the thigh are sensory and nerve to sartorius is motor

true

38
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The saphenous nerve is transmitted through the _______

adductor (hunter's) canal

39
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Obturator nerve contains fibers from ___, ___ and ___

L2 ; L3 ; L4

40
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The main movement associated with the obturator nerve is _____

adduction

41
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____ nerve is the principle contributor to the obturator nerve

L3

42
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(TQ) The posterior/anterior branch of the obturator nerve are separated initially by the _____ and then by the _____

obturator externus ; adductor brevis

43
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Anterior branch of the obturator nerve sends branches to communicate with branches of the femoral nerve, forming the _____

subsartorial plexus

44
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The posterior branch of the obturator nerve travels through the _____

obturator externus

45
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The posterior branch of the obturator nerve sends muscular branches to which 2 muscles?

1. obturator externus

2. adductor magnus