Ch 14 The Brain and Cranial Nerves Flashcards
What are the 4 major parts of the brain?
- Brainstem
- Cerebellum
- Diencephalon
- Cerebrum
where does the cerebrospinal fluid reside?
Subarachnoid Space
What is the function of CSF?
- Shock Absorber
- Protection from Chemical injury
- Circulation of nutrients and wastes removal
what are the structures of the brainstem
- Medulla Oblongata
- Pons
Midbrain
This part of the brainstem is the “Vital Center”
Medulla Oblongata
This part of the brainstem is the bridge that connects right and left sides of the cerebellum, and is the respiratory center
The Pons
what part of the brain is responsible for connects the pons to diencephalon?
Midbrain
what does the midbrain do?
- Eye movement
- Auditory Processing
- Visual Processing
what brain structure is called the “little brain”
Cerebellum
what is the primary function of the cerebellum?
Coordination of muscle activity
what could be the cause of having damage of the cerebellum
- Jerky movement
- staggered gait
- difficulty maintaining balance
where is the location of the diencephalon?
located beneath the cerebrum and above the brain stem
This gland in the brain is the relay station for most sensory tracts
Thalamus
This gland in the brain controls body function: hormone production, water balance, body temperature and sleep pattern
Hypthalamus
which part of the brain is the biggest structure out of all of them
Cerebrum
what is the structured called that helps connect the left and right hemisphere of the cerebrum
Corpus Callosum
what are the ridges called for the brian?
Cerebral Gyri
what are the deep fissures called of the brain
Sulci
what is the outer layer that is composed of gray matter of the brain
Cerebral Cortex
what does the frontal lobe control?
- Motor Function
- Speech
- Decision Making
- Comparing/Catergorizing
- Long Term Memory
- Forms Your personality and behavior
Where is the Broca’s Area reside
Left Hemisphere
What is the function of the Parietal Lobe
- Somatosensory area
- Sensation:
* Skin
* Pain
* Temperature
* Touch
* Propioception
What is the function of the temporal lobe
Helps to:
* Hear
* Smell
* Language
in what lobe is the wernicke’s area found
Temporal Lobe
what is the funciton of the occipital lobe
Helps with sight and depth perception and 3d sight
Cranial Nerve I
Olfactory
Cranial Nerve II
Optic
Cranial Nerve III
Oculomotor
Cranial Nerve IV
Trochlear
Cranial Nerve V
Trigeminal
Cranial Nerve VI
Abducens
Cranial Nerve VII
Facial
Cranial Nerve VIII
Vestibulocochlear
Cranial Nerve IX
Glossopharyngeal
Cranial Nerve X
Vagus
Cranial Nerve XI
(Spinal) Accessory
Cranial Nerve XII
Hypoglossal
This nerve is all sensory and connects the nerve’s bulbs from the nose to temporal lobe
Olfactory Nerve (I)
This nerve is all sensory, this nerve also comes together at a chiasm
Optic Nerve (II)
How does the optic chiasm work
The fibers from the medial side of the eye crosses over to the other side while the lateral side remains ipsilateral
This nerve is all motor only and controls the muscles that move the eyeball
Oculomotor (III), Trochlear (IV), & Abducens (VI)
This nerve is the largest cranial nerve, mixed with motor and sensation
Trigeminal Nerve (V)
what are the 3 regions of the trigeminal nerve
- Ophthalmic
- Maxilary
- Mandibular
This nerve is a mix of motor and sensory, controls the muscles of the face for expression and mastication
Facial Nerves (VII)
This nerve is sensory nerve and has two branches that are equilibrium and hearing
Vestibulocochlear Nerve VIII
This is a mixed nerve that has senses for taste buds, monitors blood pressure and CO levels, and motor muscles that assist in swallowing
Glossopharyngeal Nerve (IX)
This is a mixed nerve : muscles for swallowing, vocalizing and coughing
Sensory : sensation around the ear, has some taste buds, and sensory receptors in most organs of the abdomen and thoracic regions
Vagus nerve (X)
This nerve is a mixed nerve that coordinates head movement by supplying the SCM and traps
Spinal Accessory Nerve (XI)
This nerve is motor only and supplies muscles of the tounge for moving and swallowing food
Hypoglossal Nerve (XII)