Anatomy and Phtsiology- McGovern Chp. 12
Order by
40 terms
Terms | Definitions |
|---|---|
 Ventricles | arise from expansions of the lumen of embryonic neural tube |
| Ventricles- filled with | cerebral spinal fluid |
| Ventricles connect | To the subarachnoid space, a fluid-filled space surrounding the brain |
| 3 functional areas of cerebral hemisphere | motor, sensory, association areas |
| Primary motor cortex- location, composed | pre-central gyrus of the frontal lobe pyramidal cells |
| pyramidal cells- define, and use | large neurons in the pre-central gyri allows us to consciously control precise or voluntary movements of skeletal muscle |
| Premotor cortex- 3 traits | 1. controls learned motor skills of a repetitious or patterned naure. 2. invloved in planning movements 3. memory bank for skilled motor activities |
| Broca's Area- 2 traits | 1. motor speech area 2. active when prepare to speak and even when we think about planning on speaking. |
| Frontal eye fields-use | controls voluntary eye movements |
| primary somatosensory cortex- location | post-central gyrus |
| Spatial discrimination-2 define (know order)!!! | 1. neurons receive info from general sensory receptors in the skin and proprioceptors in skeletal muscle 2. neurons then identify region being stimulated |
| Somatosensory areas-primary function | integrate sensory inputs (temp., pressure) relayed to via the primary somatosensory cortex to produce an understanding of object being felt |
| primary visual cortex | recieves visual info from retina in the eye |
| visual association area | covers occipital lobe |
| primary auditory cortex | superior margin of temporal lobe sound energy exciting the inner ear hearing receptors cause impulses to be transmitted to primary auditory cortex |
| auditory association area | posterior to auditory cortex permits perception of sound stimulus memories of sounds heard in the past |
| olfactory cortex | afferent fibers from smell receptors in the superior nasal cavities send impulses along olfactory tracts that are relayed to olfactory cortices |
| gustatory cortex | perception of tast |
| pre-frontal cortex | intellect, learning abilities, and memory reasoning, judgement, long-term planning develops slowly |
| Wernicke's area | sounds out unfamiliar words |
| Broca's area | speech production |
| lateral prefrontal cortex | language comprehension |
| lateral and ventral parts of temporal lobes | coordinate the auditory and visual aspects of language |
| commissures | connect corresponding gray areas of the two hemispheres largest is in the corpus callosum |
| projection fibers | enter cerebral hemisphere from lower brain or cord centers |
| amygdala | almond shaped, sits on tail of caudate nucleus, belongs in limbic system |
| lateral geniculate body | visual relay center |
| medial geniculate body | auditory relay center |
| thalamus- 1 use | gateway to cerebral cortex nuclei |
| mammilary bodies- | relay stations in olfactory bodies |
| infundibulum | stalk of hypothalamus that connects to the pituitary gland to the base of the hypothalamus auditory center |
| autonomic control center- 2 traits | regulates ANS activity by controlling the activity of centers in brain stem and spinal cord 2. center for emotional response |
| pineal gland | visible extension of the epithalamus secretes hormone melatonin |
| choroid plexus | CSF forming structure |
| cerebral aqueduct | connects 3rd and 4th ventricles |
| pneumatic center | respiratory center that maintains normal breathing rhythm |
| olives | relay sensory info on the state of stretch of muscles and jointss to the cerebellum |
| arbor vitae | distinctive patterns of white matter resembling a tree |
| cerebellar processing | functional scheme for motor activity |
| cerebellar processing- 4 steps | 1. frontal motor association area of cerebral cortex, through collateral fiber of pyramidal tracts notifies cerebellum of its intent to initiate voluntary muscle contraction 2.cerebellum receives info (same time) from proprioceptors and lets brain know where it is going. 3. cerebullar cortex calculates the best way to coordinate force, direction, maintain posture 4. through superior peduncles, the cerebellum dispatches to the cerebral cortex its blueprint for coordinating movement |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.