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Neuro Systems Exam 2 > 1B. Topographic Anatomy of the Nervous System > Flashcards

1B. Topographic Anatomy of the Nervous System Flashcards

1
Q

What are the boundaries of the Myelencephalon?

A
  • Trapezoid body (rostral limit)
  • First Cervical Spinal Nerve (caudal limit)
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2
Q

On the Ventral Surface of the Myelencephalon, what are you seeing? And to what system does it belong?

A
  • Trapezoid body = auditory system
  • Pyramids = Pyramidal motor system
  • Olive = site of synapse in extrapyramidal motor system
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3
Q

Myelencephalon serves as the attachment site for cranial nerves ____ through ______

A

VI, XII

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4
Q

On the Dorsal surface of the Myelencephalon, the fasciculus gracilis is a pathway that is coming from the ____________ areas of the body

A

Pelvic Limb
(Conscious Proprioception)

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5
Q

On the Dorsal surface of the Myelencephalon, the fasciculus cuneatus is a pathway that is coming from the ____________ areas of the body

A

Thoracic Limb
(Conscious Proprioception)

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6
Q

On the Dorsal surface of the Myelencephalon, the spinal tract of the trigeminal nerve is a pathway that is coming from the ____________ areas of the body

A

head and face
(pain and temperature sensation)

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7
Q

On the Dorsal surface of the Myelencephalon, there is an angle that forms in the caudal aspect of the ____________
- Obex is the topographic term for this

A

Fourth Ventricle

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8
Q

Myelencephalon Ventricle System:
- Caudal Half Rhomboid Fossa

A

Fourth Ventricle

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9
Q

Myelencephalon Ventricle System:
- Thin Layer of Ependyma and Pia Matter

A

Caudal Medullary

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10
Q

Myelencephalon Ventricle System:
Groove at the junction of Lateral Wall and Floor of the ventricle

A

Sulcus Limitans

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11
Q

Myelencephalon Ventricle System:
Continuation from the spinal cord in the midline of the ventricle floor

A

Dorsal Medial Sulcus

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12
Q

Ventral Surface of Metencephalon:
Transverse Fibers of the pons:
- __________________ going into cerebellum
- Become ________________ cerebellar peduncle

A
  • Pyramidal Motor Fibers
  • Middle
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13
Q

Ventral Surface of Metencephalon:
Longitudinal Fibers of the pons (deep to transverse fibers of the pons)
- _______________________ going through brainstem and into spinal cord

A

Pyramidal Motor Fibers

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14
Q

Metencephalon serves as the attachment site for cranial nerve _______

A

V

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15
Q

On the Dorsal Surface of the Metencephalon, you will find:

A
  • Cerebellum
  • Crerebellar Peduncles
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15
Q

On the Dorsal Surface of the Metencephalon, you will find:

A
  • Cerebellum
  • Crerebellar Peduncles
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16
Q
  • Coordinates, integrates, and regulates motor activity with sensory information
A

Cerebellum

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17
Q
  • Three pairs
  • Connects cerebellum to brainstem
A

Cerebellar Peduncles

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18
Q

Ventricular System of Metencephalon:
- Cranial Half Rhomboid Fossa

A

Fourth ventricle

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19
Q

Ventricular System of Metencephalon:
- Thin layer of ependyma and pia matter

A

Rostral medullary velum

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20
Q

Ventricular System of Metencephalon:
- Groove at junction of lateral wall and floor of ventricle

A

Sulcus Limitans

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21
Q

Ventricular System of Metencephalon:
- Continuation from the spinal cord in the midline of the ventricle floor

A

Dorsal median sulcus

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22
Q

Name the boundaries of the Mesencephalon.
- rostral limit
- caudal limit

A
  • Diencephalon
  • Metencephalon
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23
Q

On the ventral surface of the Mesencephalon, you can see:

A
  • Crus Cerebri
    * left and right bundles
    * descending Pyramidal Motor Pathway
  • Interpenduncular Fossa
    * space between the left and right crus cerbri
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24
Q

Cranial Nerves associated with the midbrain (Mesencephalon) are Cranial Nerves ________ & _________

A

III & IV (of to the side, smaller bundle)

25
Q

Which is the only cranial nerve that exits from the Dorsal surface of the brainstem?

A

Cranial Nerve IV

26
Q

On the Dorsal Surface of the Mesencephalon you can find:

A
  • Corpora Quadrigemina
27
Q

On the Dorsal Surface of the Mesencephalon: Corpora Quadrigemina (site of information synapse)
- Rostral colliculus: paired
___________________ reflexes
- Caudal colliculus: paired
___________________ reflexes

A
  • Visual
  • Auditory
28
Q

Ventricular System of the Mesencephalon:
- Mesencephalic Aqueduct: the “O” in the middle
- The dorsal portion of the mesencephalon is the ____________

A

Tectum

29
Q

Ventricular System of the Mesencephalon:
- Mesencephalic Aqueduct: the “O” in the middle
- The Ventral portion of the mesencephalon is the ___________

A

Tegmentum

30
Q

List the Five Subdivisions of the Diencephalon (Forebrain):

A

1- Thalamus
2- Epithalamus
3- Metathalamus
4- Subthalamus
5- Hypothalamus

31
Q

What is the rostral end of the Brainstem?

A

Diencephalon

32
Q

How would we define the boundaries of the Diencephalon?
- Rostral Limit
- Caudal Limit

A
  • Optic Chiasm (band of tissue)
  • Mammillary Bodies (two bumps)
33
Q

Ventral Surfaces of the Diencephalon (there are 4)
- site of synapse for autonomic nervous system and emotion

A

mamillary bodies

34
Q

Ventral Surfaces of the Diencephalon (there are 4)
- site of attachment for pituitary gland

A

Tuber Cinereum

35
Q

Ventral Surfaces of the Diencephalon (there are 4)
- Site of decussation (crossing) for optic nerve (cranial nerve II)

A

Optic Chiasm

36
Q

Ventral Surfaces of the Diencephalon (there are 4)
- Visual pathway over lateral surface

A

Optic Tract

37
Q

Which cranial nerves are associated with the Diencephalon?

A

Cranial Nerve II

38
Q

Dorsal aspect of the Diencephalon (there are 3)
- melatonin to regulate sleep patterns and circadian rhythm

A

Pineal body

39
Q

Dorsal aspect of the Diencephalon (there are 3)
- termination of the optic tract; synapse

A

lateral geniculate body

40
Q

Dorsal aspect of the Diencephalon (there are 3)
- site of synapse in the auditory pathway

A

Medial geniculate body

41
Q

Metathalamus is composed of the:

A

lateral and medial geniculate bodies

42
Q

Diencephalon Ventricular System:
- Circular Shape
- Connected to lateral ventricle via interventricular foramen
- surrounds inter thalamic adhesion

A

Third Ventricle

43
Q

On the Ventral Surface of the Telencephalon you can see:
- site of synapse in olfactory pathway = ______________
- Olfactory Cortex = ______________

A
  • Olfactory bulb
  • Piriform lobe
44
Q

The cranial nerve of the Telencephalon is:

A

Cranial Nerve I

45
Q

On the Dorsal Surface of the Telencephalon you can see:
- multiple ridges = ______________
- grooves = _____________
- left and right __________
- dorsal longitudinal fissure

A
  • gyrus, gyri
  • sulcus, sulci
  • cerebral hemispheres
46
Q

The Ventricular system of the Telencephalon:

A
  • lateral ventricles (left and right)
  • interventricular foramen (connects to the third ventricle)
47
Q

The cerebral spinal fluid is going the flow from __________ to ___________ through the ventricular system

A

rostral, caudal

48
Q

What is shorter, the spinal cord or the vertebral canal?

A

spinal cord

49
Q

In which species does the spinal cord stop at the level of the Fifth Lumbar Vertebra?

A

Canine

50
Q

In which species does the spinal cord stop at the level of S1 or 2 back at the sacrum?

A

Equine

51
Q

In which species does the spinal cord stop at the level of L6?

A

Bovine
Feline

52
Q

Refers to the enlargement because it is the area of the Brachial Plexus, at the level of spinal cord C6, 7, 8, T1 and 2

A

Cervical Intumescence

53
Q

Corresponds to the level of the lumbar-sacral plexus, is about at the level of L5 to S1

A

Lumbar Intumescence

54
Q

end of the Spinal Cord

A

Conus Medullaris

55
Q

extends from the Conus Medullaris, is that short extension of the connective tissue covering the terminal part of the spinal cord or conus medullaris

A

Filum Terminale

56
Q

The tail of the horse, located in the terminal part of the vertebral canal and is formed by all of the nerve roots as they pass in a caudal direction for their segmental distribution as the spinal nerves throughout the lumbar, sacral and coccygeal areas

A

Cauda Equina

57
Q

Spinal roots: How many for each spinal nerve?

A

Two
(dorsal and ventral root)

58
Q

Spinal Nerve Rootlets: __________- for each spinal nerve

A

many

59
Q

We can describe the white matter of the spinal cord as:

A
  • dorsal funiculus
  • lateral funiculus
  • ventral funiculus
60
Q

We can describe the gray matter of the spinal cord as:

A
  • dorsal horn (sensory function)
  • ventral horn (motor function)
  • lateral horn

Neuro Systems Exam 2 (11 decks)

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