Brainscape's Knowledge GenomeTM

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


See full index

Neuroanatomy > Exam #1: Lab 2 > Flashcards

Exam #1: Lab 2 Flashcards

1
Q

What is the cervical enlargement?

A

Roots of the brachial plexus coming off the cervical spinal cord= larger cord

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

What do the ventral primary rami become in the thoracic spinal cord?

A

Intercostal nerves

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

What is the lumbar enlargement?

A

Area of the cord that innervates the lower limb

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

What is the conus medullaris? Where is the conus medullaris?

A

~L1 the end of the spinal cord

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

What is the filuman terminale?

A

Pia mater anchor for the spinal dura at the end of the spinal cord

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

Where is the gray matter?

A

“Butterfly” in the middle of the cord; this is the unmyelinated neuronal cell bodies, axons & dendrites

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

Where is the white matter/

A

Outside of the butterfly

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

How does the white:gray matter ratio of the cervical cord compare to other regions? Why?

A

In the cervical cord there is much more white matter b/c this is the ascending & descending tracts of myelinated axons & dendrites from all of the body

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

Where is the anterior horn on the cross-section of the spinal cord? What does the anterior horn contain?

A

Anterior horn= bottom of the butterfly that contains motonuerons

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

Where is the dorsal horn on the cross-section of the spinal cord? What does the dorsal horn contain?

A

Wing-tips of the butterfly that contain sensory neurons

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

Where is the lateral horn on the cross-section of the spinal cord? What does the lateral horn contain?

A

Preganglionic cell bodies of the SNS—T1-L2

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

What is the ventral median fissure?

A

Wide/ deep groove that is specific for the ventral aspect of the spinal cord

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

What is the dorsal median sulcus?

A

Shallow groove in the dorsal part of the spinal cord

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

What is & where is the dorsal faniculus/ posterior faniculus?

A

This is the white matter between the two dorsal/ posterior horns i.e. the wingtips of the butterfly

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

What is & where is the lateral faniculus?

A

This is the white matter lateral to the two dorsal/ posterior horns i.e. the wingtips of the butterfly

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

What is & where is the anterior faniculus?

A

This is the white matter anterior to the ventral horns i.e. the body of the butterfly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How does the white:gray matter ratio change in the lumbar spinal cord? Why?

A

Less white & more gray matter b/c the descending motor tracts have “left” gone to the upper body & sensory tracts only contain information from the lower limb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the anterior horn?

A

Body of the butterfly that contains cell bodies of the lower motoneurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How is the posterior/ dorsal horn of the gray matter divided?

A

The posterior horn is divided into “Rexed’s Lamina”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are the major division of the posterior horn that we are responsible for? What is their function?

A

Substantia gelatinosa—”Rexed’s Lamina II” = pain & temperature

Nucleus proprius= pain & temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is Lissauer’s Tract?

A
  • This is a white matter tract that sits just outside of the posterior horn; it is also called the “dorsolateral tract”
  • This bundle of myelinated axons comes from cell bodies of sensory neurons located in the dorsal root ganglion (DRG)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Where are the DRG in relation to Lissaruer’s Tract?

A

DRG sits outside of the cord in the proximal spinal nerve. Axons of the DRG exit the spinal nerve & enter the spinal cord to form “Lissauer’s Tract.”

23
Q

What is the function of Lissauer’s Tract?

A

Pain
Temp
Crude touch fibers

24
Q

How does the pons appear on gross dissection?

A

Swollen portion of the brainstem

25
Q

What forms the pons?

A

Tracts that leave the cerebellar hemispheres, especially the middle cerebellar peduncle

*Note that the pons is called the “basis pedunculi” b/c is the structure that bridges the two cerebellar hemispheres

26
Q

What is the anterior median fissure?

A

Ventral fissure that continues from the cord into the brain

27
Q

What are the pyramids?

A

Columns of white matter that sit just lateral to the ventral fissure in the medulla

28
Q

What is the olive?

A

Hallmark of the medulla that sits just lateral to the pyramids

29
Q

What are the pre & post-olivary sulci?

A

These are the sulci adjacent to the olive

  • Pre= between olive & the pyraminds medially
  • Post= lateral to the olive
30
Q

What are the cerebral peduncles?

A

Columns of white matter coming down into the midbrain from the cerebrum

31
Q

What is the Corpora Quadrigemina?

A

“Four bodies” that indicate that you’re in the midbrain or “tectum (roof) of the midbrain”

32
Q

What are the superior colliculi?

A
  • Two superior nuceli of the Corpora Quadrigemina

- Function in vision

33
Q

What are the inferior colliculi?

A
  • Two inferior nuceli of the Corpora Quadrigemina

- Function in hearing

34
Q

What is the name of the sulcus visualized of the brainstem from the dorsal view?

A

Dorsal median sulcus

35
Q

Where does the 4th ventricle sit relative to the dorsal brainstem?

A

Superior to the dorsal brainstem, between the pons & the medulla

36
Q

What is the MCP or Middle Cerebellar Peducle?

A

White matter tract from the cerebellum to the pons

37
Q

What is the ICP or Inferior Cerebellar Peduncle?

A

White matter tract connecting the cerebellum to the medulla

38
Q

What is the SCP?

A

White matter from cerebral cortex to the midbrain

39
Q

What EOM is specific to CN III (oculomotor)?

A

Medial Rectus

40
Q

Where is the root of CN V(trigeminal) in relation to the ventral brain?

A

Lateral pons

41
Q

What is the name of CN CN VI? What EOM does it specifically innervate?

A

“Abducens” Lateral rectus

42
Q

Where is CN VI (Abducens) in relation to the ventral brain?

A

Ponto-medullary junction, medially

43
Q

Where are CN VII & CN VIIII in relation to the ventral brain?

A

Lateral ponto-medullary junction

44
Q

What is the landmark for CN IX, X & XI?

A

Olive; specifically, the post-olivary sulcus

45
Q

What is the landmark for CN XII?

A

Olive; specifically, the pre-olivary sulcus

46
Q

Where does CN IV leave the brain?

A

Dorsally

47
Q

What forms the basilar pons?

A

This is a swelling formed by the middle cerebellar peduncle

48
Q

What is the tegmentum? What does the tegmentum contain?

A

“Floor” of the midbrain & pons that contains cranial nerve nuclei

49
Q

What divides the tectum & tegmentum?

A

Cerebral aqueduct

50
Q

What is the Crus Cerebri?

A

This is a collection of descending white matter tracts from cerebral cortex into the midbrain; it is on the anterior aspect of the midbrain

51
Q

What is the white wavy structure that is deep to the olive seen on cross-sectional view?

A

“Inferior olivary nucleus”

52
Q

What is the hallmark that tells you that you’re in the rostal midbrain?

A

Red Nucleus

53
Q

What are the three parts of the cerebral peduncle?

A

1) Crus cerebri
2) Substania Nigra
3) Tegmentum of the midbrain

54
Q

What is the interpeduncular fossa?

A

Fossa between the two cerebral peduncles

Neuroanatomy (36 decks)

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