Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GI - MSI Spring > Lumbar Plexus > Flashcards

Lumbar Plexus Flashcards

1
Q

Subcostal nerve spinal root contributions and what does it innervate?

A 
T12
Motor: rectus abdominis, pyramidalis
Transversus abdominis 
internal oblique
External oblique 
Sensory to skin of anterior and lateral body wall and upper gluteal area
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Iliohypogastric spinal nerve contribution and innervation?

A

L1 (+T12)
Motor: transversus abdominis, internal oblique, external oblique
Sensory to suprapubic region and upper gluteal region
Carries afferent and efferent fibers for abdominal reflex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Ilioinguinal n

A

L1
Motor: transversus abdominis and internal oblique
Sensory: root of penis and anterior scrotum, skin of mons pubis and labia majora
Skin of medial and upper thighs in males and afferent of cremasteric reflex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Genitofemoral n

A

L1, L2
Pierces Psoas major m near L3
Genital branch: motor to cremaster (efferent) and sensory to anterior scrotum or labia majora
Femoral branch: innervate skin of thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Lateral femoral cutaneous nerve

A

L2, L3

Sensory to skin of anterolateral and posterolateral thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Femoral n

A

L2, 3, 4
Largest branch
Motor: iliacus, anterior thigh mm
Sensory: anterior and medial thigh and leg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Obturator n

A

L2,3,4 (anterior)
Motor: medial thigh
Sensory to hip joint, skin, medial thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Accessory obturator n

A

L3,4

Motor: pectineus m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Lumbosacral trunk

A

L4, L5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Preganglionic sympathetic fibers originate from where?

A

spinal cord at T5 to L2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where do autonomic sympathetic fibers synapse?

A

prevertebral ganglia located near aorta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What parasympathetic n supplies fibers to forgut and midgut derivatives of the abdomen?

A

vagus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What do sacral parasympathetics go to? (S2,3,4)

A

hindgut derivatives: lower abdomen and pelvis

Pelvic splanchics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the anterior vagal trunk supply preganglionic fibers to?

A

stomach, liver, gall bladder, duodenum and pancreas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does the posterior esophageal plexus contain fibers of? what does it supply preganglionic fibers to?

A

contains fibers from both left and right vagus that forms posterior vagal trunk
Supplies to stomach and intestines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the preaortic autonomic plexuses ?

A

celac, superior mesenteric, aorticorenal, aortic, and inferior mesenteric plexus

17
Q

What do the preaortic autonomic plexuses continue as?

A

Superior hypogastric plexus, inferior hypogastric plexus and common/external/internal iliac plexuses

18
Q

What type of axons does the somatic nervous system have?

A

thick and myelinated = fast conduction

19
Q

What type of axons does the autonomic nervous system have?

A

thin, some myelinated = slower conduction

20
Q

What are autonomic plexuses?

A

collection of sympathetic postganglionic axons and parasympathetic preganglionic axons as well as some visceral sensory axons

21
Q

What does the hypogastric plexus innervate?

A

pelvic viscera = autonomic control of urinary and reproductive function

22
Q

Describe the axon lengths of pre and post ganglionic parasympathetic fibers and the neurotransmitter

A

Pre-long and ACh
Post-short and ACh
Specific

23
Q

Describe the axon lengths of pre and post ganglionic sympathetic fibers and the neurotransmitter

A

Pre-short and branched; ACh

Post-long and branched; NE

24
Q

Sympathetics causes a heightened sense of alertness due to stimulation of what system?

A

reticular activation system

25
Q

Where are preganlionic sympathetic neuron cell bodies housed?

A

lateral horn of T1-L2 spinal cord

26
Q

What connects the spinal nerves to each sympathetic trunk?

A

rami communicantes: carry preganglionic sympathetic axons from T1-L2 spinal nerves

27
Q

White rami are associated with what spinal nerve?

A

only T1-L2

28
Q

Gray rami are associated with what spinal nerves?

A

all, including cervical, sacra, and coccygeal spinal nerves: can disperse through all parts of the body

29
Q

What are the 4 sympathetic pathways?

A

spinal nerve pathway: blood vessel and skin
Postganglionic sympathetic nerve pathway: Glands, heart, lung
Splanchnic nerve pathway: visceral, abdominal organs, bladder
Adrenal medulla pathway

30
Q

What are the sympathetic splanchnic nerves?

A

greater, lesser, least thoracic
Lumbar splanchnic
Sacral splanchnic

31
Q

Effects of the parasympathetic nervous system tend to be _____ and ______. There (is/isnt) mass activation seen

A

discrete and localized

isnt

32
Q

What cranial nerves are parasympathetics?

A

oculomotor, facial, glossopharyngeal, and vagus

33
Q

The vagus nerve is associated with what organs?

A

heart, respiratory, bronchial passages, esophagus, and abdominal viscera

GI - MSI Spring (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions