Electrical synapses - Study guides, Class notes & Summaries

Information flows through neurons from ____ to ____ in the neuron - Answer-dendrite; axon _____ bring a cell to threshold while _____ bring a cell further from threshold - Answer-EPSPs; IPSPs What 3 main things is neuroplasticity capable of? - Answer-- changing the properties of neurotransmission - changes in cell properties - structural/ anatomical changes of cells How does neuroplasticity change the properties of neurotransmission? (2) - Answer-- change in transmitter size - change in ...

_____ bring a cell to threshold while _____ bring a cell further from threshold - ️️EPSPs; IPSPs Describe the mechanism of fusimotor drive - ️️muscle spindles are parallel to extrafusal fibres; the extrafusal fibres shorten when they contract, and the gamamotorneuron causes the intrafusal fibres to contract in order to maintain tension in the centre of the muscle spindle so it is still able to detect muscle stretch thoughout the entire ROM What things determine the type of cell tha...

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...

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...

Bios 286 - Exam 1 Questions and Answers 100% Pass Functions of the brain - Correct Answer ️️ -central control of organs, consciousness, movement, problem solving, emotions, speech, perception Two types of cells in nervous system - Correct Answer ️️ -Neurons and glial cells Main purpose of neurons - Correct Answer ️️ -Receive and transmit info, sense environment, and muscle response Main purpose of glial cells - Correct Answer ️️ -Insulate neurons, transport nourishment, an...

Psychopharm Exam 1 practice 170 Questions with Verified Answers The PMHNP is evaluating a 68-year-old man for symptoms of major depression. While assessing the appearance of the patient, an obvious left-sided ptosis is noted. Which cranial nerve is directly linked to this condition? a. III b. IV c. V d. VI - CORRECT ANSWER A A 55-year-old woman has been referred for a psychiatric evaluation for a change in personality, lack of impulse control, and increasingly reckless decision-making....

Control movement correct answers The nervous system uses visual and kinaesthetic input to.... 2 correct answers How many streams are in our visual pathway? - The where -Identifies movement in the environment -spatial cues correct answers What is the dorsal stream? Posterior to parietal cortex correct answers Where is the dorsal stream located? - The what -Identifies information about objects -Pattern discrimination and recognition correct answers What is the ventral stream? Te...

erve cells - involved in the generation and interpretation of electrical signals neuroglia - support neuronal cell activity dendrites - collect info cell body - process info axon - propagate info to synapses synapses - transmit info bioelectricity - -resting membrane potential -action potential ~ALL CELLS negative on the inside compared to the outside resting membrane potential - -baseline electrical condition of all cells -depends on two parameters

Presynaptic neurons can form synapses with a post synaptic neuron Axosomatic Interaction between axon and some (or cell body) Axoaxonic synapses Interaction between axon of one neuron and the axon of another Axodendritic interaction between axon and dendrite Electrical syanpses via gap junctions between two adjacent neurons Allows bidirectional transmission Very quick Synchronized action potentials Associated with programmed, autonomic behaviors (breathing) Chemical synapses 1. Action p...

MN 551 MIDTERM EXAM 2 – QUESTION AND ANSWERS MN551 week 10 final Which of the following sexually active women most likely faces the highest risk of developing an ectopic pregnancy? A 42 yo female patient with a long standing history of chronic nausea and vomiting but a near insatiable appetite has had her symptoms Which of the following individuals demonstrates a health problem with his or her axial skeleton? QUESTION 1. The unique clinical presentation of a three-month-old infant in the emerg...