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BIOL 121P
Topic 10 - Neurobiology
| Question | Answer |
|---|---|
| Smooth Muscle | blood vessels, gap junctions, coordinate activity (involuntary) |
| Cardiac Muscle | gap junctions coordinate heart contraction (involuntary) |
| Skeletal Muscle | a twisted chain of actin movements |
| Myosin Filaments | bundles of many myosin molecules |
| Muscle Contraction | activation of tension-generating sites withing the muscle fibers |
| Sliding Filament Theory | actin slides past myosin, shortening the muscle fiber without shortening the filament |
| Neuromuscular Junction | gap between neuron and muscle |
| Biological Rhythm | cycle in the physiological process of living beings |
| Pineal Gland | melatonin release, receives signal from the SCN and increases the production of melatonin |
| Hypothalamus | contains groups of nerve cells that act as control centers affecting sleep ad arousal |
| Suprachiasmatic Nucleus | small region in hypothalamus that controls the body's circadian rhythms |
| Sleep | suspension of normal consciousness |
| NREM Sleep | 4 stages where the body repairs/regenerates tissue, strengthens immune system, etc |
| REM Sleep | sleep stage marked by physiological changes (increased brain activity, eye movement) |
| Brain Stem | communicates with the hypothalamus to control the transitions between wake and sleep |
| Thalamus | relays information from the senses to the brain |