Spatial summation - Study guides, Class notes & Summaries

Define adaptation - Answer Reduction of sensory responsiveness when stimulation is unchanging. It prevents us from having to respond continuously to unimportant information Explain the adaptation process for the visual pathway - Answer Low levels of Ca++ activate recoverin which activates rhodopsin kinase, phosphorylates rhodopsin, arrestin binds and shuts off pathway Explain the adaptation process for the auditory pathway - Answer (prolonged stimulus) Stereocilia are bent, tip links...

1. What structure is part of the CNS: Brain Somatic nervous system Peripheral nerve pathways Cranial Nerves: Brain 2. Which of the following is an insulating substance for the neuron? Schwann Sheath Myelin Neurilemma Node of Ranvier: Myelin 3. Which neurons transmit impulses from neuron to neuron? Unipolar Sensory Motor Interneurons: Interneurons 4. Which term describes successive, rapid impulses received from a single neuron on the same synapse? Temporal summation Spatial summatio...

In an isometric contraction, the ,uncle develops tension but does not? A. Shorten B. Lengthen C. Expend energy D. Conduct electrical current E. Exhibit elasticity Answer: A. Shorten QUESTION _________ is the summation of postsynaptic potentials in response to stimuli that occur at different locations in the membrane of a postsynaptic cell at the same time A. Cortical summation B. Spatial summation C. Temporal summation D. Tactile summation E. Ol...

The person at highest risk for traumatic brain injury (TBI) is: a. black and economically disadvantaged. b. male and disabled. c. female and 20 years of age. d. an economically advantaged young adult. a. black and economically disadvantaged. Those at highest risk for TBI are children 0–4 years of age, older adolescents aged 15–19 years, and adults aged 65 years and older. Males have the highest incidence in every age group. TBI is highest among black and in lower- and median-income ...

OCCTH 585 Midterm 1 Latest Version Already Passed evidence for a plastic brain - learning and memory - skill acquisition - development - aging - injury and disease - recovery neuron cell that allows transmission of information dendrites collects/receives information from other sources cell body integrates incoming signals and generates outgoing signal to the axon; powerhouse of the cell axon passes electrical signals (action potential) to dendrites of another cell or to...

HUBS 191 Progress Test II Latest Version Graded A Nervous system cells neurons and glia Neuron input zone dendrites and cell body Neuron summation zone axon hillock Neuron conduction zone axon Neuron output zone axon terminals Axon hillock decides whether to pass on information Tract axon bundles in CNS Grey matter cell bodies in CNS White matter myelinated axons in CNS; commissural, projection, and association tracts Ganglion groups of cell bodies in PNS Nerv...

Molecular phylogeny correct answers It compares the structure of a particular molecule from different organisms to discover their degree of evolutionary relation. Somatic cell correct answers A cell in an organism which isn't a gamete. DNA correct answers Deoxyribose nucleic acid. Carries the genetic information for cells and some viruses. mRNA correct answers Messenger ribose nucleic acid (single stranded). The product of transcription. Speciation correct answers The process throug...

Biol 335 Exam 2 Questions and Answers Already Passed - Which of the following sequences are in the correct order for a reflex arc? : Stimulus initiates the process, followed by activation of sensory neurons, transmission to interneurons, relay to motor neurons, and finally muscle contraction. - The resting potential of a membrane is more influenced by ______ due to ______. : Potassium ions affect it significantly because of their concentration and permeability. - Neurons with longer lengt...

Psych 115 Midterm 1 UCLA Exam Questions and Answers 100% Pass What are the three layers of protective layer called? - Answer- Meninges - Dura Mater (thick outer layer) - Arachnoid (Spongy middle layer) - Pia Mater (thin inner layer) What is the organ that constantly manufactures the CSF? - Answer- choroid plexus, which resides in hollow tubes and cavities called ventricles Where does the action potential originate? - Answer- Integration zone (or active zone) What are the three types of ...

BIOS 252 COMP EXAM LATEST UPDATE GRADED A+ ____ cells are found in the urinary bladder, renal pelvis, and ureters? A. Simple squamous epithelial B. Stratified columnar epithelial C. Transitional epithelial D. Stratified squamous epithelial E. Stratified cuboidal epithelial C. Transitional epithelial _______ cells function as immune/phagocytic cells within the central nervous system A. Ependymal B. Astrocytes C. Microglial D. Schwann E. Oligodendrogital C. Microglial _________ is th...