Brainscape's Knowledge GenomeTM

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


See full index

A&P I Lab > Lab 11 > Flashcards

Lab 11 Flashcards

1
Q

Name the skeletal muscles of the eyeball that innervate the following CN

Oculomotor

CN III

A

Superior, inferior, medial rectus, and inferior oblique

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

Name the skeletal muscles of the eyeball that innervate the following CN

Trochlear

CN IV

A

Superior oblique

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

Name the skeletal muscles of the eyeball that innervate the following CN

Abducens

CN VI

A

Lateral rectus

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

What structure is the colored part of one’s eye?

A

Iris

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

Function of the pupil

A

Control the amount of light entering the eye

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

Function of the lens

A

Focus the light to a specific region of the retina

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

What happens when the ciliary muscles contract?

A
  1. Narrows the circumference of ring
  2. Relaxes the suspensory ligaments
  3. Lens returns to resting shape – round and conducive to greater refraction and closer vision
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Explain the blind spot

A

The presence of the optic disc prevents the retina from perceiving light in that area

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

Photoreceptor found at the fovea centralis and its impact on vision

A

Cones: come in one of three forms (red, green, or blue) and provide color vision and acuity

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

Name the Cranial Nerve and Function

CN I

A

CN: Olfactory
Origin: Cerebrum
Exit: Cribiform plate
Modality: Sensory
Function: Smell

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

Name the Cranial Nerve and Function

CN II

A

CN: Optic
Origin: Cerebrum
Exit: Optic Canal
Modality: Sensory
Function: Vision

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

Name the Cranial Nerve and Function

CN III

A

CN: Oculomotor
Origin: Brainstem
Exit: Superior orbital fissure
Modality: Motor
Function: Eye movement - inferior oblique, superior/ inferior/ medial rectus; pupil constriction

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

Name the Cranial Nerve and Function

CN IV

A

CN: Trochlear
Origin: Brainstem
Exit: Superior Orbital Fissure
Modality: Motor
Function: Eye movement – superior oblique

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

Name the Cranial Nerve and Function

CN V-1

A

CN: Trigeminal – Opthalmic
Origin: Brainstem
Exit: Superior orbital fissure
Modality: Sensory
Function: sensation in the face

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

Name the Cranial Nerve and Function

CN V-2

A

CN: Trigeminal - Maxillary
Origin: Brainstem
Exit: foramen rotundum
Modality: Sensory
Function: Sensation in the face

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

Name the Cranial Nerve and Function

CN V-3

A

CN: Trigeminal – Mandibular
Origin: Brainstem
Exit: Foramen Ovale
Modality: Both
Function: sensation in the face and chewing

17
Q

Name the Cranial Nerve and Function

CN VI

A

CN: Abducens
Origin: Brainstem
Exit: Superior orbital fissure
Modality: Motor
Function: eye movement - lateral rectus

18
Q

Name the Cranial Nerve and Function

CN VII

A

CN: Facial
Origin: Brainstem
Exit: Internal acoustic meatus > Stylomastoid
Modality: Both
Function: Taste; somatosensory info from ear; facial expressions

19
Q

Name the Cranial Nerve and Function

CN VIII

A

CN: Vestibulocochlear
Origin: Brainstem
Exit: Internal acoustic meatus
Modality: Sensory
Function: Hearing and balance

20
Q

Name the Cranial Nerve and Function

CN IX

A

CN: Glossopharyngeal
Origin: Brainstem
Exit: Jugular foramen
Modality: Both
Function: Taste; somatosensory from tongue/ tonsil/ phraynx; swallowing

21
Q

Name the Cranial Nerve and Function

CN X

A

CN: Vagus
Origin: Brainstem
Exit: Jugular foramen
Modality: Both
Function: Taste; Regulation of internal organ functions and vasomotor activity (e.g. coughing, sneezing, swallowing)

22
Q

Name the Cranial Nerve and Function

CN XI

A

CN: Accessory
Origin: Brainstem
Exit: Jugular foramen
Modality: Motor
Function: Movement of sternocleidomastoid and trapezius

23
Q

Name the Cranial Nerve and Function

CN XII

A

CN: Hypoglossal
Origin: Brainstem
Exit: Hypoglossal canal
Modality: Motor
Function: Tongue muscles

24
Q

Benefit of olfactory reflex

A
  • harsh smells induce a withdrawal reflex to decrease the likelihood of ingestion/ exposure to harmful substances
25
Q

Evolutionary advantage to adaptation to smell

A
  1. We are alerted to changes in proximity/ intensity of smells
  2. We can make cognitive decisions regarding odors
  3. Over time, these diminish so we only distinguish when conditions change
26
Q

Why is solution necessary for taste?

A
  1. Gustation requires chemical ligands binding to ligand channels in the receptor membranes
  2. This requires sensed chemicals to be dissolved in the ECF surrounding the receptors
27
Q

What is the exact region of the nasal cavity receptive to smell stimuli?

A

The muscosal membranes of the uperior border of the nasal cavity

28
Q

How can we distinguish two similar smells?

A

Taste requires memory, texture, temperature

29
Q

Name the cranial nerves that exit through the

Superior Orbital Fissure

A

Oculomotor (III), Trochlear (IV), Opthalmic (V-1)

30
Q

Name the Cranial Nerves that exit from the

Jugular foramen

A

Glossophrayngeal (IX); Vagus (X); Accessory (XI)

A&P I Lab (6 decks)

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