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zoo ch.13 pt 1
brain and cranial nerves
| Question | Answer |
|---|---|
| cerebrum | largest region of human brain |
| cerebral hemispheres | interconnected by corpus callosum |
| cerebral cortex | superficial layer of gray matter |
| fissures | deep grooves |
| gyri | folds |
| sulci | shallow grooves |
| cerebellum | second-largest region of human brain |
| diencephalon | becomes major relay and processing center for info. headed to and from the cerebrum |
| thalamus | contains relay and processing centers for sensory information |
| hypothalamus | floor of the diencephalon, contains centers involved with emotions, autonomic function and hormone production |
| brain stem | includes the midbrain, pons and medulla oblongata |
| midbrain | contains nuclei that process visual and auditory information and control reflexes triggered by these stimuli |
| pons | connects the cerebellum to the brain stem |
| medulla oblongata | relays sensory information to other portions of the brain stem, and to the thalamus |
| lateral ventricles | (within each cerebral hemisphere, separated by septum pellucidum) |
| interventricular foramen | (connects each lateral ventricle to third ventricle) |
| third ventricle | located in diencephalon |
| aqueduct of the midbrain connects | third ventricle to fourth ventricle |
| fourth ventricle | becomes central canal of spinal cord |
| dura mater | most superficial layer |
| endosteal | outer |
| meningeal | inner |
| dual sinuses | largest is superior sagittal sinus; collects blood from veins of brain |
| dural folds | falx cerebri, falx cerebelli, tentorium cerebelli |
| subdural space | space between dura mater and arachnoid mater |
| arachnoid mater | middle layer |
| arachnoid membrane | smooth covering that does not follow the brains underlying folds |
| arachnoid trabeculae | connect arachnoid membrane to pia mater |
| subaracnoid space | space between arachnoid membrane and pia mater |
| pia mater | innermost layer |