Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
53 Cards in this Set
- Front
- Back
|
How many pairs of cranial nerves are there?
|
12
|
|
|
Where do each pair of cranial nerves originate?
|
the first two pairs originate from the forebrain; other 10 pairs from the brainstem
|
|
|
Which cranial nerves originate from the midbrain?
|
cranial nerves III and IV (oculomotor and trochlear)
|
|
|
Which cranial nerves originate from the pons?
|
(trigeminal, abducens, facial) cranial nerves V, VI, and VII
|
|
|
Which cranial nerves originate in the pons-medulla border?
|
cranial nerves VIII (vestibulocochlear nerves)
|
|
|
Which cranial nerves originate from the medulla?
|
Cranial nerves IX, X, XI, XII (glossopharyngeal, vagus, accessory, and hypoglossal)
|
|
|
How can the cranial nerves be classified?
|
sensory, special sensory, motor, or mixed nerves
|
|
|
What is the function of cranial nerves?
|
connect areas of the brain with a target area in the head, neck, or organ
|
|
|
Can both sensory and motor be in one cranial nerve?
|
yes
|
|
|
Which cranial nerves are only sensory?
|
I, II, and VIII
|
|
|
Which cranial nerves are only motor?
|
III, IV, VI, XI, XII
|
|
|
What is the name, function, and innervation of the first cranial nerve?
|
the olfactory nerve
-strictly sensory -olfactory epithelium travel to the olfactory bulb and synapse with neurons of the olfacgtory path. the olfactory tracts go to the primary olfactory area in the temporal lobe |
|
|
Which cranial nerves are only motor?
|
III, IV, VI, XI, XII
|
|
|
What is the name and functions of the second cranial nerve?
|
optic nerve
-vision; strictly sensory -connects eyeball to the thalamus for relay to the primary visual cortex, and superior colliculus |
|
|
What is the name, function, and innervation of the first cranial nerve?
|
the olfactory nerve
-strictly sensory -olfactory epithelium travel to the olfactory bulb and synapse with neurons of the olfacgtory path. the olfactory tracts go to the primary olfactory area in the temporal lobe |
|
|
Describe cranial nerve III
|
the oculomotor nerve
-only motor -controls 4 of the 6 external eye muscles and upper eyelid |
|
|
What is the name and functions of the second cranial nerve?
|
optic nerve
-vision; strictly sensory -connects eyeball to the thalamus for relay to the primary visual cortex, and superior colliculus |
|
|
What four external eye muscles does cranial nerve three contorl and what are their functions?
|
1. medial rectus-crosses eyes
2. inferior rectus-look down 3. superior rectus-look up 4. inferior oblique-look up and away |
|
|
Describe cranial nerve III
|
the oculomotor nerve
-only motor -controls 4 of the 6 external eye muscles and upper eyelid |
|
|
What are the autonomic functions of the oculomotor nerve?
|
contols internal eye muscles (pupillary and ciliary)
-pupil dilation, relaxes lens |
|
|
What four external eye muscles does cranial nerve three contorl and what are their functions?
|
1. medial rectus-crosses eyes
2. inferior rectus-look down 3. superior rectus-look up 4. inferior oblique-look up and away |
|
|
Which cranial nerves are only motor?
|
III, IV, VI, XI, XII
|
|
|
What are the sensory functions of the oculomotor nerve?
|
proprioception
|
|
|
What are the autonomic functions of the oculomotor nerve?
|
contols internal eye muscles (pupillary and ciliary)
-pupil dilation, relaxes lens |
|
|
What is the name, function, and innervation of the first cranial nerve?
|
the olfactory nerve
-strictly sensory -olfactory epithelium travel to the olfactory bulb and synapse with neurons of the olfacgtory path. the olfactory tracts go to the primary olfactory area in the temporal lobe |
|
|
What is the name and functions of the fourth cranial nerve?
|
trochlear nerve
motor functions: -controles the superior oblique eye muscle which rolls eye down and out sensory functions: -proprioception |
|
|
What are the sensory functions of the oculomotor nerve?
|
proprioception
|
|
|
What is the name and functions of the second cranial nerve?
|
optic nerve
-vision; strictly sensory -connects eyeball to the thalamus for relay to the primary visual cortex, and superior colliculus |
|
|
What is the name and 3 functions of the fifth cranial nerve?
|
the trigeminal nerve
1. general sensation-touch, temp, pain 2. sensory neurons -face, scalp, sinuses mouth -synapses in pons 3. motor -muscles of mastication |
|
|
What is the name and functions of the fourth cranial nerve?
|
trochlear nerve
motor functions: -controles the superior oblique eye muscle which rolls eye down and out sensory functions: -proprioception |
|
|
Describe cranial nerve III
|
the oculomotor nerve
-only motor -controls 4 of the 6 external eye muscles and upper eyelid |
|
|
Where does the fifth cranial nerve go?
|
eyes, maxillary, mandible
|
|
|
What is the name and 3 functions of the fifth cranial nerve?
|
the trigeminal nerve
1. general sensation-touch, temp, pain 2. sensory neurons -face, scalp, sinuses mouth -synapses in pons 3. motor -muscles of mastication |
|
|
What four external eye muscles does cranial nerve three contorl and what are their functions?
|
1. medial rectus-crosses eyes
2. inferior rectus-look down 3. superior rectus-look up 4. inferior oblique-look up and away |
|
|
Where does the fifth cranial nerve go?
|
eyes, maxillary, mandible
|
|
|
What are the autonomic functions of the oculomotor nerve?
|
contols internal eye muscles (pupillary and ciliary)
-pupil dilation, relaxes lens |
|
|
What are the sensory functions of the oculomotor nerve?
|
proprioception
|
|
|
What is the name and functions of the fourth cranial nerve?
|
trochlear nerve
motor functions: -controles the superior oblique eye muscle which rolls eye down and out sensory functions: -proprioception |
|
|
What is the name and 3 functions of the fifth cranial nerve?
|
the trigeminal nerve
1. general sensation-touch, temp, pain 2. sensory neurons -face, scalp, sinuses mouth -synapses in pons 3. motor -muscles of mastication |
|
|
Where does the fifth cranial nerve go?
|
eyes, maxillary, mandible
|
|
|
Which cranial nerve is the biggest one we have?
|
the fifth
|
|
|
What is the name and functions of the sixth cranial nerve?
|
abducens nerve
1. motor control of the lateral rectus eye muscle, allows us to look laterally |
|
|
What is the name and 3 functions of the seventh cranial nerve?
|
facial nerve
1. sensory-taste from anterior 2/3 of the tongue** 2. motor-muscles of face expression 3. autonomics-salivation and tearing |
|
|
What is the name and functions of the eighth cranial nerve ?
|
vestibulocochlear nerve
-sensory functions only 2 branches: 1. vestibular branch-balance and equilibrium 2. cochlear branch-hearing |
|
|
What is the name and 3 functions of ninth cranial nerve?
|
glossopharyngeal nerve
1. sensory-taste and pain from posterior 1/3 of tongue 2. autonomics -salivation 3. motor -cotrols larynx and pharynx through elevation of the muscle (swallowing) |
|
|
What is the name and functions of the tenth cranial nerve??
|
-vagus nerve
1. sensory -organs, vessels, skin, ear, throat 2. autonomics -throat, thorax, abdomen 3. motor -swallowing -everything except reproduction |
|
|
What is the name and functions of cranial nerve eleven?
|
-accessory nerve
1.motor -throat (swallowing) -sternocleidomastoid (turns head) -trapezius (pulls up shoulders) 2. sensory -proprioception |
|
|
What is the name and functions of the twelth cranial nerve?
|
hypoglossal nerve
1.motor functions -under tongue -speech and swallowing 2. sensory functions -proprioception |
|
|
What functions for cranial nerves are considered sensory?
|
special and general senses
|
|
|
What are special senses?
|
sight, taste, smell, hearing, balance
|
|
|
What are general senses?
|
tickle, itch, temp, pain
|
|
|
What are included as motor functions of the cranial nerves?
|
muscle functions of skeletal muscle in the head and neck
|
|
|
What types of auntonomic functions are included in the cranial nerves?
|
to smooth and cardiac muscle, glands
|
