| Question | Answer |
| Each muscle fiber is stimulated by only one nerve | However there are multiple muscle fibers per nerve |
| Myosin pulls on actin to contract muscles | y |
| Sarcomere | Functional unite of the muscle |
| Thins filaments | Actin |
| Thick filaments | Myosin |
| Chemoreceptors | Blood hounds, only ones with direct connection to the brain |
| Chemoreception | Olfaction |
| Chemoreception | Taste |
| Semicircular canals | Sense movement |
| Vestibule | Senses direction of gravity |
| Cochlea | Different hairs along cochlea stimulated for different pitches |
| If more cones than rods | worse night vision |
| Photopsin | Found inside of cones-red, blue, green |
| Mammalian eye | Can only focus on one depth (finger or classroom) |
| Conjunctivia | Epithelial layer that lays on top of the schlera |
| Photoreception | Light reception, sensing the "visible spectrum" |
| Electromagnetic receptors | 1)Infrared 2)Magnetoception 3)Ultra-violet 4)Electroreception |
| Chemoreceptors | Gustatory-taste receptors, olfactory-smell receptors |
| Nociceptors | Found in epidermis, triggered by extreme stimulus, found everywhere except the brain |
| Thermo receptors | Heat (warm)-in dermis, Cold receptors (at base of epidermis) |
| Pacinian corpuscle | connective tissue incloses a dendrite, deep pressure |
| Ruffini corpuscle | Detect stretch, heavy touch, pressure |
| Hair root plexus | Stimulated by hair, free nerve endings around follicles |
| Meissner's Corpuscle | Fine touch receptor wrapped in bundle of connective tissue |
| Merkel's disc | Light touch receptor right beneath skin ie fingertips |
| Mechano receptors | Stimulated by physical deformation, light touch |
| Reticular formation | Diffuse network of neurons in the core of the brainstem, determines which information reaches the cerebral cortex |
| Integration | Takes information and processes it |
| Transmission | Sensory information is transmitted through the nervous system through nerve impulses; transmit action potentials to the CNS |
| Sensory transduction | The conversion of a physical or chemical stimulus to a change in the membrane potential of a sensory receptor |
| Sensory receptors | Cells involved with sensing things, *external and *internal, neurons, epithelial cells |
| Perception | Making a meaningful understanding of a stimuli, allows one to "fill in the gaps" |
| Sensation | The awareness of sensory stimuli and turning it into an electrical impulse |
33 cards - created jun 17, 7:07am