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Anatomy > Lecture 7_Updated > Flashcards

Lecture 7_Updated Flashcards

1
Q

What segments of the spinal cord contain the lateral horn?

A

T1-L2; S2-4 ONLY

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2
Q

What type of neuron cell bodies are found in the dorsal root ganglia?

A

Sensory neurons (Pseudounipolar)

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3
Q

How do afferent fibers exit the ganglion? Where do afferent fibers synapse?

A

Dorsal rootlets
Dorsal Horn

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4
Q

What type of neuron cell bodies are found in the ventral horns?

A

Somatic motor neurons

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5
Q

How do efferent neurons exit the spinal cord?

A

As ventral rootlets (unite to form ventral root)

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6
Q

True or False: Dorsal Rootlets and Dorsal Root Ganglia are on the same side while Ventral Rootlets and Ventral Root are on opposite sides

A

True

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7
Q

How do pre-ganglionic visceromotor fibers exit the spinal cord?

A

Via ventral rootlets

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8
Q

How do pre-ganglionic fibers from the lateral horn join the spinal nerve?

A

Ventral root

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9
Q

The pre-ganglionic neurons in the lateral horn travels via the ____ to reach the chain ganglia (T1-L2)

A

white rami communicans

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10
Q

How do post-ganglionic fibers return to the spinal nerve?

A

Via grey rami communicans

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11
Q

True or False: There are 31 pairs of spinal nerves, all of which contain both motor and sensory fibers

A

True

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12
Q

What type of matter contains myelinated axons/glial cells AND has funiculi (anterior, posterior, and lateral) and anterior white commisure?

A

White matter

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13
Q

What type of matter contains neuronal cell bodies and contains grey commisure and horns (ventral, lateral, and dorsal)?

A

Grey matter

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14
Q

Which grey matter horn contains the cell bodies of sympathetic neurons and visceromotor fibers?

A

Lateral Horn

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15
Q

Which horn contains the cell body of interneurons and axons of sensory neurons?

A

Dorsal Horn

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16
Q

True or False: The central canal contains CSF and is a remnant of neural tube

A

True

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17
Q

____ nerves exit ABOVE named vertebrate, while all other spinal nerves emerge below named vertebrate

A

Cervical

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18
Q

____: area of skin that a single nerve innervates
____: muscles a single spinal nerve innervates

A

Dermatome
Myotome

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19
Q

The Cervical Plexus ranges from ___ while the Brachial Plexus ranges from ____

A

Cervical plexus: C1-5
Brachial plexus: C5-T1

20
Q

The Lumbar Plexus ranges from ____ while the Sacral Plexus ranges from _____

A

Lumbar plexus: L1-4
Sacral plexus: L4-S4

21
Q

Which plexus innervates the posterior head, neck, and diaphragm?

Which plexus innervates the pelvic, gluteal, posterior thigh, leg/foot?

A

Cervical Plexus
Sacral Plexus

22
Q

Which plexus innervates abdominal, pelvic, anterior/medial thigh?

Which plexus innervates the shoulder, axilla, and upper limbs?

A

Lumbar Plexus
Brachial Plexus

23
Q

True or False: Ventral rami in cervical region form cervical and brachial plexuses

A

True

24
Q

____ Ventral Rami does not form plexus

A

Thoracic

25
Q

T1 splits into ___ and ____

A

brachial plexus (large) and 1st intercostal nerve (small)

26
Q

T2-T6 innervates which nerve?
T7-11 innervates which nerve?
T12 innervates which nerve?

A

T2-6: 2-6th intercostal nerve
T7-11: Thoracoabdominal nerve
T12: Subcostal nerve

27
Q

How are spinal nerves formed?

A

Union of dorsal and ventral roots

28
Q

What two branches do spinal nerves form?

A

1) Dorsal Rami
2) Ventral Rami

29
Q

Which spinal nerve division send motor signals to the deep back muscles and receives sensory info from those muscles?

A

Dorsal Rami

30
Q

Which rami (ventral or dorsal) branches to form plexuses?

A

Ventral Rami

31
Q

Where does a lumbar puncture occur?

A

Lumbar cistern (L3-4)

32
Q

Where does C1 exit?
Where does C8 exit?

A

C1: Between occipital/atlas
C8: Between C7 and T1

33
Q

S1-4 divide into ___ and ___ rami while still inside the sacral canal

A

ventral; dorsal

34
Q

S5 innervates which nerve?

A

Coccygeal nerve (sacral hiatus)

35
Q

True or False: T1 nerve co-emerge inferior to pedicles of respective vertebrate

A

True

36
Q

True or False: The vertebral column and dura lengthen slower than the neural tube

A

False - the vertebral column and dura lengthen faster than the neural tube

37
Q

Where does the spinal cord end in a newborn vs. adult?

A

Newborn = L3-4
Adult = L1-2

38
Q

What two specialized pia structures help anchor and protect the spinal cord?

A

Denticulate ligaments and Filum Terminale

39
Q

What structure connects outer dura with inner pia mater?

A

Arachnoid trabeculae

40
Q

____: Potential space between dura and arachnoid

A

Subdural space

41
Q

_____: space between arachnoid and pia; contains CSF

A

Subarachnoid space

42
Q

_____: theoretical space between dura and vertebral wall, contains internal vertebral plexuses, epidural fat, and dura mater

A

Epidural space

43
Q

The Posterior Median Sulcus contains ___ while the Posteriolateral Sulcus contains ____

A

Posterior Median Sulcus = posterior spinal vein

Posteriolateral Sulcus = posterior spinal arteries

44
Q

The Anterior Longitudinal (Median) Fissure contains _____ and is lined by the linea splendens

A

Anterior spinal artery

45
Q

True or False: White Matter contains neuronal cell bodies

A

False - gray matter contains neuronal cell bodies

Anatomy (28 decks)

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