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The brain weighs _____, has 100 _____ neurons & 10 ______ _______.
- 3 lbs (1.3kg)
- billion
- trillion neuroglia
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Rich blood supply to the brain:
___ of ____ mass but uses ___ of ____ & ____
- 2%, body
- 20%, O2 & Glucose
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Blood brain barrier (BBB) is permeable to: O2, ___, ____ ___, & Alchol.
_____ ______: glucose
- CO2Small lipids
- active transport
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What CAN NOT pass through the blood brain barrier?
protiens & antibiotics
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The Brain Maninges are:
1.
2.
3.
- Dura matter
- arachnoid mater
- pia mater
-
What is cerebrospinal fluid?
clear colorless liquid w/____, ____ but ____ _____
clear colorless liquid w/ ions & protiens but lacks cells.
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Where is cerebrospinal fluid?
1.
2.
3.
- 1. Subarachnoid space
- 2. Central Canal of Spinal Cord
- 3. Four Ventricles in brain
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How is cerebrospinal fluid formed?
It's ____ at ____ ____ by ____ cells called _______ cells.
It's secreted at choroid plexus by glia cells called ependymal cells.
-
How does cerebrospinal fluid leave the Nervous system?
Arachnoid villus
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How is cerebrospinal fluid moved?
1.
2.
- 1. secretion pressure
- 2. cilia on ependymal cells
-
What is cerebrospinal fluids function?
1.
2.
3.
- 1. protection
- 2. chem enviornment (waste removal)
- 3. Cirulation (provide nutrients)
-
_____ is having water one the brain which causes ____.
-
____ is the connection beetween cerebellum & cerebrum.
Pons
-
Function of pons:
Nuclei which control breathing
-
Function of the Cerebellum:
Fine tunes mucle movements.
-
Parts of the brain (6)
- 1. Medula Oblogota
- 2.Pons
- 3. Midbrain
- 4. Cerebrum
- 5.Cerebellum
- 6. Diencephalon
-
What does the Diencephanlon include (3)?
- Thamalus
- hypothalamus
- epithalamus
-
What does the hypothalamus do?
(5)
regulate/producce sex drive, emotional behavior, eating, drinking, body temp
-
The ___ is a major relay station between ____ and rest of CNS.
-
What does the thalamus control?
emotions, memory, learning (limbic system)
-
The pituitary glad is associated with?
Hypothalamus
-
What glad produces hormones?
Pienal gland
-
-
-
Cerebral Cortex= ____
outter layer of cerebrum
-
Why is the cerebrum folded?
Maximizes surface area which means it maximizes number of neurons.
-
WHat part of a neuron is in the cortex?
cell body
-
Hunnington's disease involves ?
basal ganglia
-
general brain deterioration is known as?
Alzheimers disease
-
WHich colliculi serves as reflex centres for visual activities?
Superior
-
The inferior colliculi deal with the ___ ___ and relay impulses from?
- auditory pathway
- the inner ear to the brain
-
_____ are tracts of white matter that resemble branches of a tree.
Arbor vitae
-
Folia consists of ____ in a series of __________.
- gray matter
- slender parallel folds
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