Brain and Spinal Cord Flashcards
What are the three general regions that the brain is divided into?
Cerebrum
Cerebellum
Brainstem
Which of the following includes the corpora quadrigemina and mesencephalic aqueduct?
a. Telencephalon
b. Diencephalon
c. Mesencephalon
d. Metencephalon
e. Myencephalon
c. Mesencephalon
Which of the following includes the medulla oblongata, caudal part of the fourth ventricle, and obex?
a. Telencephalon
b. Diencephalon
c. Mesencephalon
d. Metencephalon
e. Myencephalon
e. Myencephalon
Which of the following includes the cerebral hemispheres and lateral ventricles?
a. Telencephalon
b. Diencephalon
c. Mesencephalon
d. Metencephalon
e. Myencephalon
a. Telencephalon
What is the double-layered, outermost tough meningeal layer?
Dura mater
What is the name of the left and right partition of the cerebral hemispheres?
Falx cerebri
Which of the following includes the thalamus, hypothalamus, epithalamus, and third ventricle?
a. Telencephalon
b. Diencephalon
c. Mesencephalon
d. Metencephalon
e. Myencephalon
b. Diencephalon
What regions are included in the Metencephalon?
Pons
Cerebellum
Rostral part of the fourth ventricle
What is the name of the membranous partitions of the cerebrum and cerebellum?
Tentorium cerebelli
What are the name of the sinuses that are part of the dural sinuses?
Dorsal sagittal sinus Transverse sinuses (bilateral)
What connects the fourth ventricle to the third ventricle?
Mesencephalic acqueduct
Where do the dural sinuses return blood and CSF?
Venous system
What is the name of the septum that separates the lateral ventricles?
Septum pellucidum
The dorsal sagittal dural sinus is located on the dorsal aspect of what fissure?
Longitudinal fissure
The ____ is a band of fibers that course transversely between the cerebral hemispheres deep within the longitudinal fissure.
Corpus callosum
Elevation of the cerebral cortex are ___, while depressions of the cerebral cortex are _____.
Gyri, Sulci
What are the five lobes of the cerebrum?
- Occipital lobe
- Parietal lobe
- Frontal lobe
- Temporal lobe
- Piriform lobe
What are the three general regions of the Cerebrum?
Internal Capsule
Cerebral cortex
Basal nuclei
True/False. Reflex pathways need to relay through the cerebral cortex.
False
Which part of the cerebral cortex is part of the piriform lobe and is responsible for olfactory function?
Paleocortex
Which part of he cerebral cortex is part of the limbic system?
Archicortex
Which lobe is responsible for conscious perception of visual information?
Occipital lobe
In which lobe will we see lesions that produce abnormalities of voluntary movement and/or loss of conscious proprioception if the lesion affects the sensorimotor cortex?
Frontal lobe
Which lobe is responsible for producing a 3D map of the body’s location in space and its relation to objects in that space?
Parietal lobe
Which lobe is responsible for voluntary motor functions that are learned or skilled responses?
Frontal lobe
What is the temporal lobe responsible for?
Perception and interpretation of auditory information
Which of the following is false about the Piriform Lobe?
a. Contains strong connections to the limbic system
b. Lesions reduce olfactory acuity or produce anosmia
c. It’s easily detected when testing
d. Perception and interpretation of olfactory information
c. It’s easily detected when testing
The ___ cortex is located within the temporal lobe.
Temporal Lobe
Which part of the brain is responsible for posture and movement coordination?
Cerebellum
The cerebellum communicates with other parts of the CNS via three pair of nerve tracts called _____.
Cerebellar peduncles
What are the four “F’s” of the limbic system?
Fighting
Feeding
Fornication
Fleeing
What part of the brain is a major component of the RAS, which “wakes up” the cerebral cortex?
Thalamus
Pathway of communication between the thalamus and the cortex is via the _____.
Internal capsule
The pressure in the ___ has to be larger than the pressure in the ___ in order for CSF reabsorption to occur.
Subarachnoid space (CSF) > Dural sinus (venous)
What is the modification of the collateral supply to the cerebral arterial circle that is found in the cat, ruminant, and pig?
Rete mirabile
What structure is fed by the basilar artery and internal carotid arteries in most species?
Cerebral arterial circle (Circle of Willis)
What artery branches supply the rete mirabile in species with regressed internal carotid arteries?
Maxillary artery
Occipital artery
The ____ is the primary blood supply of the spinal cord and the ____ is the secondary supply.
Ventral spinal artery, Dorsal spinal arteries
Mammals have ____ cervical vertebrae and ___ cervical spinal segments/nerves.
7, 8
Where do the first two sacral spinal nerves emerge through?
Sacral foramina (dorsal and pelvic sacral foramina)
It is best to insert a needle caudal to the ____ to avoid puncturing the spinal cord when withdrawing the CSF.
Conus Medullaris
What are the regions of white matter within the spinal cord referenced as?
Funiculi
Which of the following is FALSE regarding the ascending tracts of the spinal cord?
a. Contains the prefix “spino-“
b. Located in the dorsal and ventral funiculi
c. Transport sensory information from the spinal cord to the brain
d. All the above are TRUE
b. Located in the dorsal and ventral funiculi
They’re in the dorsal and lateral funiculi
What do the descending tracts of the spinal cord transmit?
“Commands” from the brain to the spinal cord
What is the point for point correspondence of a specific body part to a specific region of the CNS?
Somatotopy
What is the definition of proprioception?
Ability to sense stimuli in relation to position, motion, and equilibrium
What is are the levels of damage to the spinal cord from superficial to deep?
General proprioception
Voluntary Motor
Superficial Pain
Deep Pain
What are the six functional divisions of the spinal cord and what segments do they correspond to?
- Cranial cervical region: C1-C5
- Cervicothoracic region: C6-T2
- Thoracolumbar region: T3-L3
- Lumbosacral region: L4-S2
- Sacral region: S1- S3
- Caudal region: Cd 1-5
Which region of the spinal cord has PSNS innervation to the viscera of the pelvis and urinary bladder?
Sacral region
The axons from ____ contribute to the sciatic nerve.
S1-S2
The ___ region contains pre-ganglionic sympathetic neurons while the ___ region provides sympathetic innervation to the head/ eye.
Thoracolumbar region, Cervicothoracic region