Chapter 13: Brain + Spinal Cord Flashcards
4 Parts of the Brain
Cerebrum
Cerebellum
Brainstem (3 parts)
Diencephalon
CCBD
3 Subparts of Brain Stem
midbrain
medulla oblongata
pons
folds of brain tissue
gyri
the shallow depressions between folds of brain tissue
sulci
The deeper grooves
fissures
Cranial meninges (From deep to superficial)
- Pia mater
- Arachnoid mater
- Dura mater:
(PAD)
inner most
thin layer of areolar CT
Pia mater
external to pia mater
subarachnoid space fill with CSF
made of a web of collagen and elastic fibers
Arachnoid mater
tough outer membrane
Dura mater
Located on midline and projects into longitudinal fissure between cerebral hemispheres
Falx cerebri
(“tent” over the cerebellum)
separates occipital and temporal lobes from cerebellum
Tentorium cerebelli
What does the Tentorium cerebelli seperate?
Cerebellum from Occipital + Temporal
separates the left and right cerebellar hemispheres
Falx cerebelli
Provides Buoyancy
protects CNS by providing a liquid cushion
keeps CNS environment stable (helps transport nutrients and wastes)
Cerebrospinal Fluid
What Reduces Brains weight?
Cerebrospinal Fluid
What does Buoyancy do?
Cerebrospinal Fluid
What protects CNS by providing a liquid cushion
Cerebrospinal Fluid
keeps CNS environment stable (helps transport nutrients and wastes)
Cerebrospinal Fluid
Cerebrospinal Fluid is formed by
what is it made of ?
choroid plexus-
layer of ependymal cells and blood capillaries
layer of ependymal cells and blood capillaries (choroid plexus) layers the what?
Cerebrospinal Fluid
The choroid plexus forms what
(made of ependymal cells and blood capillaries)
Cerebrospinal Fluid
origin of all complex intellectual functions
Cerebrum
Cerebral Hemispheres:
What do White matter tracts connect?
(at a few locations)
Hemispheres
corpus callosum: largest tract providing connection between them
What is the largest tract providing connection between Hemispheres?
corpus callosum
5 Lobes of the Cerebrum
frontal
parietal
temporal
occipital
insula
functions
Motor control, concentration, verbal communication, decision making, planning, personality
Frontal
functions: general sensory
parietal
functions: hearing and smelling
temporal
functions: vision and visual memories
occipital
functions: memory and sense of taste
insula