Brainscape's Knowledge GenomeTM

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


See full index

Neuroanatomy Lecture > Medulla Oblongata > Flashcards

Medulla Oblongata Flashcards

1
Q

What is the medulla oblongata a derivative of?

A

the myelencephalon

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

What is the fasciculus cuneatus?

A

an ascending sensory tract

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

Where does the fasciculus cuneatus originate from?

A

spinal cord segments C1-T5

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

Where does the fasciculus cuneatus terminate?

A

the thalamus

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

What somatic sensory function is the fasciculus cuneatus in charge of?

A

proprioception and touch

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

What regions of the body does the fasciculus cuneatus receive information from?

A

the cervical area, upper trunk, and the thoracic limb

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

What is the spinal tract of the trigeminal nerve?

A

a descending sensory tract

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

Where does the spinal tract of the trigeminal nerve originate?

A

in the face

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

Where does the spinal tract of the trigeminal nerve terminate?

A

in the nucleus of spinal tract V

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

What is the somatic sensory function of the spinal tract of the trigeminal nerve?

A

facial pain and temp

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

What is the pyramid?

A

a descending motor tract

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

Where does the pyramid originate?

A

cerebral motor cortex

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

Where does the pyramid terminate?

A

the brain stem and the spinal cord

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

What cranial nerves originate in the medulla oblongata?

A

CN VI - CN XII

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

Where does the abducent nerve terminate?

A

in the lateral rectus and retractor bulbi

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

What does injury to the abducent nerve cause?

A

medial strabismus

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

What reflex is absent when the abducent nerve is damaged?

A

3rd eyelid reflex

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

Where does the facial nerve originate from?

A

the trapezoid body

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

What type of fibers does the facial nerve have?

A

somatic motor, visceral motor, and sensory

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

What do the somatic motor fibers of the facial nerve control?

A

blinking and the muscles of facial expression

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

What do the visceral motor fibers of the facial nerve control?

A

the lacrimal gland and salivary glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What sensory information does the facial nerve receive?

A

taste from the rostral 2/3 of the tongue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What reflexes are absent if the facial nerve is damaged?

A

spontaneous blinking, the palpebral reflex, and the corneal reflex

24
Q

What will a lesion to the visceral motor fibers of the facial cause?

A

lack of tear and saliva production

25
Q

What will a lesion to the sensory fibers of the facial cause?

A

lack of sensory information from the tastebuds

26
Q

What nerve controls the sensory portion of the corneal reflex?

A

the trigeminal

27
Q

What nerve controls the motor portion of the corneal reflex?

A

the facial and the abducent

28
Q

What nerve controls the sensory portion of the palpebral reflex?

A

the trigeminal

29
Q

What nerve controls the motor portion of the palpebral reflex?

A

the facial nerve

30
Q

What type of fibers does the vestibulocochlear nerve have?

A

afferent

31
Q

Where do fibers from the vestibular organ go?

A

to the vestibular nuclei

32
Q

Where do fibers from the vestibular nuclei go?

A

to the vestibulospinal tract

33
Q

Where do fibers from the vestibulospinal tract go?

A

to the skeletal muscles that the vestibulocochlear nerve innervates

34
Q

What does the vestibular part of the vestibulocohlear nerve control?

A

eye movement in response to change in head position and adjust body position in response to change in head position

35
Q

Where do fibers from the cochlear nuclei go?

A

dorsally to the acoustic stria and ventrally to the trapezoid body

36
Q

What does the cochlear part of the vestibulocochlear nerve do?

A

provides auditory input

37
Q

What is the lateral lemniscus?

A

a tract from the cochlear nuclei

38
Q

What does the lateral lemniscus send fibers to?

A

the medial geniculate nucleus of the thalamus and the caudal colliculus of the midbrain

39
Q

What are the auditory structures of the medulla?

A

cochlear nuclei, acoustic stria, and trapezoid body

40
Q

What are some clinical signs that are associated with a lesion to the vestibulocochlear nerve?

A

abnormal nystagmus, head tilting, falling, and circling

41
Q

What does the quick phase of abnormal nystagmus indicate?

A

what side the lesion is on - it will go away from the lesion

42
Q

If a patient is head tilting to the right, where is the lesion?

A

on the right vestibulocochlear nerve

43
Q

If a patient is circling to the right, where is the lesion?

A

on the right vestibulocochlear nerve

44
Q

What kind of information does the nucleus of the solitary tract get and from what cranial nerves?

A

sensory information from the vagus and glossopharyngeal

45
Q

What type of nucleus is the nucleus ambiguous?

A

motor

46
Q

What nerves are associated with the nucleus ambiguous?

A

the vagus, glossopharyngeal, and accessory

47
Q

What does the nucleus ambiguous send motor innervation to?

A

the pharynx, larynx, palate, and esophagus

48
Q

What does the motor nucleus of the accessory nerve do?

A

it innervates the trapezius, cleidocervicalis, sternocephalicus, and cleidomastoideus to keep the head up

49
Q

What cranial nerves are associated with the swallowing reflex?

A

CN IX, X, and XI

50
Q

What nucleus is involved in the sensory stimulation of the swallowing reflex?

A

nucleus of the solitary tract

51
Q

What nucleus is involed in the motor part of the swallowing reflex?

A

nucleus ambiguous

52
Q

What is peristalsis?

A

the contraction of smooth muscle that moves things from one end to the other

53
Q

What is dysphagia?

A

difficulty swallowing and lack of esophageal peristalsis

54
Q

What can lack of esophageal peristalsis be caused by?

A

deficit in sensory input and motor control

55
Q

What can lack of esophageal peristalsis lead to?

A

mega esophagous

56
Q

How does the vestibular nuclei innervate the extraocular muscles?

A

via the medial longitudinal fasciculus

Neuroanatomy Lecture (17 decks)

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