Term
| What 3 parts does the brain stem consist of ? |
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Definition
| Medulla oblongata, pons, midbrain |
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Term
| Name the parts of the brain |
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Definition
| brain stem, cerebellum, diencephalon, cerebrum |
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Term
| the _____ is the largest part of the brain |
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Definition
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Term
| the ________ includes the epithalamus, thalamus subthalamus, hypothalamus, pineal gland |
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Definition
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Term
| the _______ is supported on the diencephalon and brain stem and is divided into 2 hemispheser and into lobes |
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Definition
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Term
| _____ are protective coverings of the brain, 3 layers continuous with spinal meninges |
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Definition
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Term
| what are the 3 layers of the cranial meninges |
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Definition
| dura mater, arachnoid mater, pia mater |
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Definition
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Definition
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Definition
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Term
| what 3 extenstions of the dura mater separte parts of the brain? |
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Definition
| falx cerebri, falx cerebelli, tentorium cerebelli |
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Term
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Definition
| 2 hemispheres of the cerebrum |
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Term
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Definition
| 2 hemispheres of the cerebellum |
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Term
| tentorium cerebellum separate |
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Definition
| the cerebrum from the cerebellum |
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Term
| what carries blood to the brain? |
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Definition
| the internal carotid artery (and vertebral arteries) |
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Term
| how does blood return to the heart |
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Definition
| via the internal jugular veins |
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Term
| the brain consumes ______% of the o2 and glucose use |
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Definition
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Term
| neurons synthesize ATP almost excluseively from? |
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Definition
| glucose via reactions that use oxygen |
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Term
| The ______ is a barrier c onsisteing of specialized capillaries and astrocytes |
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Definition
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Term
| the blood brain barrier protects brain cells from? |
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Definition
| harmful substances and pathogens |
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Term
| what is the function of the blood brain barrier? |
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Definition
| to keep most proteins and most antibiotic drugs from passing from the blood into brain tissue |
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Term
| How does the bbb maintain the 'barrier' |
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Definition
| by use of the astrocytes pressing against the capillaries , they secrete a chemical to maintain the permeability of the tight junct. |
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Term
| what does the bbb consist mainly of? |
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Definition
| tight junctions and thick basement membrane |
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Term
| the function of the tight junctions and thk basement membrane in the bbb |
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Definition
| the tight junct. seal together the endothelial cells of the brain capillaries |
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Term
| what substances can cross the bb barrier |
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Definition
| glucose (water-soluble), lipid-soluble substances (c02, alocohol, most anesthetic agents) |
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Term
| glucose travels across the bb barrier by what transport |
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Definition
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Term
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Definition
| cerebrospinal fluid, a clear, colorless liquid, circulates in the brain, cord and subarachnoid space |
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Term
| what is the function of CSF |
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Definition
| protects the brain and spinal cord against chemical and physical injury- carries oxygen glucose and other chemical from blood to neurons and neuroglia |
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Term
| how many cavities are filled with CSF |
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Definition
| there are 4 cavities filled with CSF |
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Term
| what are the cavities that are filled with CSF called |
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Definition
| ventricles, 2 lateral ventricles, 1 per hemisphere, separated by the septum pellucidum |
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Term
| what is the thin membrane that separates the hemispheres called |
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Definition
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Definition
| the ependymal cells from blood plasma by filtration and secretion |
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Term
| fingerlike extensions of the arachnoid |
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Definition
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