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67 terms

#3; Chap. 14; pt. 1

STUDY
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____ part of the brain is towards the forehead.
Rostral
____ part of the brain is toward the spinal cord.
Caudal
What are the major parts of the brain?
Cerebrum, Cerebellum, & Brainstem
___ is 83% of brain volume.
Cerebrum
____ contains 50% of the neurons in the brain.
Cerebellum
How much does the brain weigh?
3 to 3.5 lbs
____ separates 2 cerebral hemispheres.
Longitudinal
___ are the thick folds of the cerebral hemisphere in the brain.
Gyri
____ are the shallow grooves of the cerebral hemisphere in the brain.
Sulci
The surface of the brain is made up of?
Outer Grey Matter
The surface layer of the brain is the gray matter called the ____.
Cortex
In the surface layer of the brain, the deeper masses of gray matter are called the ___.
Nuclei
____- deep groove that separates the cerebral hemispheres.
Longitudinal Fissure
____- thick nerve bundle at the bottom of longitudinal fissure that connects the hemispheres.
Corpus Callosum
____ separates frontal & parietal lobes.
Central Sulcus
The central sulcus separates what?
Frontal & Parietal Lobes
____ separates the parietal lobe from the temporal lobe.
Lateral Sulcus
The the lateral sulcus separates what?
Parietal & Temporal Lobe
The thalamus & hypothalamus are part of the ____ part of the brainstem.
Diencephalon
____- what remains of the brain if the cerebrum & cerebellum are removed.
Brainstem
What are the major components of the brainstem?
Diencephalon, Midbrain, Pons, & Medulla Oblongata
____ separates the parietal lobe from the occipital lobe.
Parieto-Occipital Sulcus
What does the parieto-occipital sulcus separate?
Parietal & Occipital Lobes
____- three connective tissue membranes that envelop (cover) the brain.
Meninges
Meninges lies between what?
Nervous Tissue & Bone
The outer periosteal & inner periosteal are layers of what in the cranial cavity?
Dura Mater
What layers make up the dura mater in the cranial cavity?
Outer Periosteal & Inner Periosteal
Cranial ____ is pressed closely against the cranial bones.
Dura Mater
The ___ is not attached to the bone except when around the foramen magnum, sella turcica, the crista galli, & sutures of the skull.
Dura Mater
The dura mater is not attached to the bone except when its around what?
The Foramen Magnum, Sella Turcica, The Crista Galli, & Sutures of the Skull
____ is separated by dural sinuses.
Outer Periosteal & Inner Periosteal
The outer periosteal & inner periosteal are separated by what?
Dural Sinuses
____- collect blood circulating through the brain
Dural Sinuses
____ folds inward to extend between parts of the brain.
Dura Mater
____ separates the two cerebral hemispheres.
Falx Cerebri
____ separates the cerebrum from the cerebellum.
Tentorium Cerebelli
The falx cerebri separates what?
The two cerebral hemispheres
The tentorium cerebeilli separates what?
The cerebrum from the cerebellum
____ separates the right & left halves of the cerebellum.
Falx Cerebelli
The falx cerebelli separates what?
The right & left halves of the cerebellum
Arachnoid mater & pia mater are similar to those meninges to those in the _____.
Spinal Cord
____- transparent membrane over the brain surface
Arachnoid Mater
The ___ contains the subarachnoid space that separates it from the pia mater below.
Arachnoid Mater
___ separates the arachnoid mater from the pia mater below.
Subarachnoid Space
The ____ contains the subdural space that separates it from dura mater above in some places.
Arachnoid Mater
The subarachnoid space separates what?
Arachnoid Mater & Pia Mater
___ separates the arachnoid mater from the dura mater above in some places.
Subdural Space
The subdural space separates what?
Arachnoid Mater & Dura Mater
____- very thin membrane that follows contours of brain, even dipping into sulci
Pia Mater
____- is not usually visible without a microscope
Pia Mater
Name the internal chambers within the CNS.
Lateral Ventricles (2), Third Ventricle, Cerebral Aqueduct, Fourth Ventricle, & Central Canal
____ is paired chambers.
Lateral Ventricle
____ are found inside the cerebral hemispheres.
Lateral Ventricle
____ is a single vertical space under corpus callosum.
Third Ventricle
____ runs through the midbrain.
Cerebral Aqueduct
_____ is a small chamber between pons & cerebellum.
Fourth Ventricle
____ runs through the spinal cord.
Central Canal
The ____ within the CNS are lined with ependymal cells and containing choroid plexus of capillaries that produce CSF.
Internal Chambers
The internal chambers within the CNS are lined with ____ and containing choroid plexus of capillaries that produce CSF.
Ependymal Cells
The internal chambers within the CNS are lined with ependymal cells and containing ____s of capillaries that produce CSF.
Choroid Plexus
The internal chambers within the CNS are lined with ependymal cells and containing choroid plexus of capillaries that produce ____.
Cerebrospinal Fluid (CSF)
___ produce about 500 mL per day.
Cerebrospinal Fluid (CSF)
____- clear, colorless liquid that fills the ventricles and canals of CNS
Cerebrospinal Fluid (CSF)
____ bathes its external surface.
Cerebrospinal Fluid (CSF)
____ has a production that begins with the filtration of blood plasma through the capillaries of the brain.
Cerebrospinal Fluid (CSF)
Cerebrospinal fluid (CSF) has a production that begins with the filtration of ____a through the capillaries of the brain.
Blood Plasma
Cerebrospinal fluid (CSF) has a production that begins with the filtration of blood plasma through the capillaries of the ____
Brain