#3; Chap. 14; pt. 1

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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

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