Arachnoid villi - Study guides, Class notes & Summaries

What is hydrocephalus? Correct Answer-Hydrocephalus is the excessive accumulation of CSF that increases intracranial pressure. -Blockage in flow of CSF through ventricles of brain or when cannot be absorbed by arachnoid villi. What types of substances are able to directly cross the blood-brain barrier? Correct Answer-Lipophilic substances are able to cross the blood-brain barrier directly and enter the brain. *Water crosses membrane by simple diffusion. Most nutrients cross blood brain barr...

NU 545 Unit 2 Questions With Complete Solutions. Review the anatomy of the brain. Which portion is responsible for keeping you awake, controlling thought, speech, emotions and behavior, maintaining balance and posture? - ANSWER Broca Area in the inferior frontal lobe (Brodmann areas 44, 45) is an important center for speech and language processing. This area, rostral to the inferior edge of the premotor area (Brodmann area 6) o the inferior frontal gyrus, is usually most important in the ...

Neuroscience EXAM 2– USA (Latest 2023/ 2024 Update) Exam Prep with Questions and Verified Answers| 100% Correct| Grade A Q: foramen magnum Answer: where most of the vertebral arteries runs up through and feeds blood up to the rest of the brain Q: foramen spinosum Answer: where the middle meningeal artery runs Q: jugular foramen Answer: where the jugular vein runs up through the skull Q: herniations Answer: shifting of the brain due to vascular damage ...

NU 545 Unit 2 Questions With Complete Solutions. Review the anatomy of the brain. Which portion is responsible for keeping you awake, controlling thought, speech, emotions and behavior, maintaining balance and posture? - ANSWER Broca Area in the inferior frontal lobe (Brodmann areas 44, 45) is an important center for speech and language processing. This area, rostral to the inferior edge of the premotor area (Brodmann area 6) o the inferior frontal gyrus, is usually most important in the ...

white matter of the cerebellum forms a branching network known as - arbor vitae the cerebrum develops from the embryonic region called - telecephalon cerebrospinal fluid is secreted by choroid plexus in the _____ ventricles and reabsorbed by arachnoid villi in the ____ - lateral, third, and fourth; superior sagittal sinus the reticular formation - is composed of nuclei scattered aroung the brainstem in the CNS clusters of gray matter containing cell bodies are - nuclei the nuclei of cranial...

NU 545 Unit 2 Questions With Complete Solutions. Review the anatomy of the brain. Which portion is responsible for keeping you awake, controlling thought, speech, emotions and behavior, maintaining balance and posture? - ANSWER Broca Area in the inferior frontal lobe (Brodmann areas 44, 45) is an important center for speech and language processing. This area, rostral to the inferior edge of the premotor area (Brodmann area 6) o the inferior frontal gyrus, is usually most important in the ...

CRITICAL CARE REGISTERED NURSE (CCRN) summary 1. What are the components of the Central Nervous System?: Cerebral cortex (lobes) • Basal ganglia • Thalamus • Hypothalamus • Cerebellum -Brainstem -Pons -Midbrain -Medulla oblongata 2. What are meninges?: Protect the brain and spinal cord PAD= Pia mater, Arachnoid mater, and Dura mater 3. What is the Subarachnoid space?: • Between arachnoid and pia mater • Contains cerebrospinal fluid (CSF) 4. Where is CSF produced?: chor...

Central Nervous System - brain and spinal cord Rostral - toward forehead Caudal - Toward cord longitudinal fissure - divides cerebral hemispheres Gyri - folds Sulci - grooves cortex - surface layer of gray matter Nuclei (in brain) - deeper masses of gray matter ("mini brains" cluster of cell bodies) tracts - bundles of axons (white matter) Gray matter - neuron cell bodies, dendrites, and synapses (on outside of brain) White matter - bundles of axons; forms tracts that connect parts...

Uncal herniation occurs when a cerebellar tonsil shifts through the foramen magnum. the cingulate gyrus shifts under the falx cerebri. the diencephalon shifts from the middle fossa straight downward through the tentorial notch into the posterior fossa. the hippocampal gyrus shifts from the middle fossa through the tentorial notch into the posterior fossa. Uncal herniation (hippocampal herniation, lateral mass herniation) occurs when the uncus or hippocampal gyrus (or both) shifts from t...

Where can you find bipolar neurons? - Retina of the eye, olfactory region, and inner ear Where can you find unipolar neurons? - Most sensory Where can you find multipolar neurons? - Most CNS and efferent neurons Neuroglia of the CNS - -astrocytes (blood-brain barrier) -microglial cells -ependymal cells -oligodendrocyte Neuroglia of the PNS - -Schwann cells -satellite cells Olfactory nerve (CNI) - 1- Smell Optic nerve (CNII) - 2- visual Oculomotor (CNIII) - 3- elevates ey...