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...

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...

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...

T or F: Potassium ions are at high concentrations inside of cells, including neurons - ANSWER-True The action potential is a result of: - ANSWER-the movement of ions The post-synaptic cell can be: - ANSWER-in glands, muscle cells and neurons Th resting potential of a neuron is - ANSWER--60mV T or F: The cell body refers to the part of the neurons that begin at the dendrites and extend to the axon terminal - ANSWER-false T or F: Voltage gated ion channels open when a protein binds ...

SPLH 620 Quiz #1 questions and answers with complete top solutions Dorsal (Superior) top of brain Ventral (Inferior) bottom of brain Anterior front of brain Posterior back of brain GABA primary inhibitory CNS neurotransmitter Axon Hillock location of action potential initiation Spatial Summation integration of synaptic input from dendrites and cell body areas Node of Ranvier area of axon between myelinated sections with many ion channels ...

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...

Bio 151 Exam 3 - UW-Madison Question with answers (VERIFIED)Nervous system a network of interconnected nerve cells Neurons basic functional units of the nervous system Homeostasis the ability of animals, organs, and cells to actively regulate and maintain a stable internal state What are the three types of nerve cells? sensory neurons, interneurons, motor neurons Sensory neurons send and receive information about an animal's environment or it internal physiologi...

When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate. - ANSWER TRUE Briefly explain why the action potential flows only from the axon hillock to the terminal web. - ANSWER During the course of an action potential there is a refractory period that makes sure the action potential can't trigger backwards by the use of caps on gated sodium channels. The caps close and keeps the action potential flowing in one direction. How do the glial cells (i.e., m...

In temporal summation, a single presynaptic neuron stimulates the creation of action potentials in a postsynaptic neuron when it correct answer: Fires at a fast enough rate that the sum of EPSPs in the postsynaptic neuron moves above threshold A postsynaptic neuron responds to neurotransmitters released by a presynaptic neuron by creating correct answer: Either EPSPs or IPSPs Wallerian degeneration refers to correct answer: Degeneration of the distal end of axon and myelin sheath after ...

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 ...