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Nervous System
Central Nervous System (CNS)
| Question | Answer |
|---|---|
| The central nervous system (CNS) consists of: | the brain & spinal cord immersed in cerebrospinal fluid (CSF). |
| The brain consists of: | the cerebrum, cerebellum, & brain stem. |
| The cerebrum is divided into: | 2 hemispheres: left & right. |
| Each hemisphere of the cerebrum contains: | 4 lobes: frontal, parietal, occipital, & temporal. |
| The outer layer of the brain is: | the cerebral cortex (grey matter). |
| The tissue covered by the cerebral cortex (grey matter) containing mostly axons is: | the diencephalon (white matter). |
| Corpus callosum is: | the mass of white matter that connects the left & right hemispheres of the cerebrum. |
| Basal ganglia is: | a group of specialized clusters of grey matter that assist in coordination. |
| Functions of the cortex (cerebral cortex): | Consciousness, emotions, memory, & language. Includes all activity that occurs in cerebrum after sensory signals are recieved. |
| Drugs that effect the cerebral cortex include: | caffeine, nicotine, cocaine, & amphetamines. |
| The brainstem is the control center for: | vital survival functions. |
| The Brainstem is divided into what three parts? | the midbrain, the pons, & the medulla oblongata. |
| The cerebellum coordinates: | balance, posture, & movement. |
| The vestibular apparatus is important for: | spatial orientation (our senses of equilibrium). |
| How many ventricles are there? | four. |
| The ventricles provide: | cushioning/protection for the brain & nerves. |
| The ventricles circulate: | cerebrospinal fluid (CSF) through the brain & spinal cord. |
| The meninges are what? | the three membranes surrounding the brain & spinal cord. |
| The dura mater is: | the outer most layer of meninges. |
| The arachnoid mater is: | the cobweb-like, middle layer of meninges containing many blood vessels. |
| The pia mater is: | the thin, innermost layer of the meninges adhering directly to the brain & spinal cord. |
| The epidural space is: | between the skull & dura mater. |
| The subdural space is: | between dura mater & arachnoid mater. |
| The subarachnoid space is: | between arachnoid mater & pia mater. |
| The spinal cord begins: | at the base of the medulla oblongata. |
| The spinal cord ends at: | approximately L1/L2. |
| There are how many pairs of spinal nerves (that connect the brain & spinal cord to the rest of the body)? | thirty-one |
| How many cervical pairs (of spinal nerves)? | eight. |
| How many thoracic pairs(of spinal nerves)? | twelve. |
| How many lumbar pairs(of spinal nerves)? | five. |
| How many sacral pairs(of spinal nerves)? | five. |
| How many coccygeal pairs(of spinal nerves)? | one. |
| The spinal cord: | is the center for spinal reflexes & conducts nerve impulses. |
Created by:
Sonhos
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