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 ...

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 ...

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...

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 ...

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...

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...

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...

BIO 240 EXAM 2 2.1 QUESTIONS AND ANSWERS 1. The outermost meningeal layer is the __________ mater. - Correct Answer-dura 2. The dural __________ associated with the cranial meninges forms in the fluid filled space between the peristeal and meningeal dura layers. - Correct Answer-sinus 3. The __________ space is filled with cerebrospinal fluid (CSF). - Correct Answer-subarachnoid 4. Arachnoid villi project into the the dural __________ where they transport __________ into this area for re...