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bio questions
for first test of the semester...fri.30
| Question | Answer |
|---|---|
| what is the major structure of the nervous system? | the brain |
| how much does the brain weight? | approximently 3lbs. |
| how many interneurons are in the brain? | 10 billion |
| what is another name for the skull? | cranium |
| what is the crainium covered by? | the duramater, arachnoid matter, and pia matter |
| what is another name for the 3 membranes of the cranium? | meninges |
| what is the cerebrospinal fluid? | clear fluid;fills the space between membranes |
| where is the fluid found? | in brain and spinal cord |
| what does the fluid do? | cushions the brain agianst shock |
| waht is another name for concusion? | brain bruise |
| what is a concusion? | membranes become bruised due to a violent blow to the head |
| the brain is an........... | oxygen hog |
| how much O2 does the brain use? | 25% |
| what happens when you think hard? | you double your O2 consumption |
| what happens when you are asleep? | O2 is redistributed |
| what happens when you are fightened or have a seisure? | you consume more O2 |
| how many regions are in the brain? | 3 |
| what is the largest region? | forebrain |
| what is the forebrain made of? | gray matter, and white matter |
| what is gray matter? | neuron connections |
| what is white matter? | axons w/mylein sheaths |
| what are the 4 lobes of the cerebrum? | parital, occipital, frontal, and temporal |
| what is the second region of the brain? | the midbrain |
| where is the midbrain located? | in the middle of your head |
| what is in the midbrain? | the hypothalamus, pituitary glands, tharamus, pineal gland, and the collicli |
| what is the last region of the brain? | hindbrain and stem |
| what is located in the hindbrain? | cerebelum, medulla oblongata, pons, and reticular formation |
| what does the cerebelum do? | corrdination and balance |
| how many hemespheres is the brain divided into? | 2 |
| what are the 2 hemespheres? | left and right |
| what is the right hemesphere in charge of? | mucle ability and creativity |
| what is the left hemesphere in charge of? | dominant, language |
| what are the four types of tissue? | muscle, epithilial, connective, and nervous |
| what organ helps to maintain body temp.? | circulatory system |
| wwhat do the 11 organ systems work together to do? | maintain homeostasis |
| what are the 3 parts of the nervous system? | central, peripheral, autonomic |
| where is the central located? | brain and spinal cord |
| where is the peripheral located? | (blank) |
| wahat does the autonomic do? | controls involentary proccess. |
| what does sensory mean? | to the brain |
| what does homeostasis mean? | balanced |
Created by:
sammie123
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