03:37Animation: Propagation of an Action Potential in Unmyelineated and Myelinated AxonsPearson1872views1rank
03:31Neurotransmitters And Their Functions Dopamine, Glutamate, Serotonin, Norepinephrine, EpinephrineProfessional Supplement Center507views
02:06Definition of neurotransmitters / classification of NeurotransmitterZeal's pharmacy tutorials844views
10:57The Nervous System, Part 3 - Synapses!: Crash Course Anatomy & Physiology #10CrashCourse890views
05:33Factors affecting the speed of an Action Potential: The Speed of Conductance Along an Axon.Miss Estruch934views
05:24PHYL 141 | Nervous System | Saltatory & Continuous Propagationdoctorj808 - Anatomy & Physiology (A&P) with Dr.J1472views
06:15Action Potential | Part 3 | Propagation | Saltatory Conduction | Nerve Muscle PhysiologyByte Size Med741views
05:59The Nervous System, Part 2 - Action! Potential!: Crash Course Anatomy & Physiology #9CrashCourse1362views
Multiple ChoiceA neuron that transmits an impulse to the central nervous system after the neuron is stimulated by the environment is called a(n) __________. 723views
Multiple ChoiceWhich of the following is specifically a part or a function of the central nervous system? 554views
Multiple ChoiceThe part of a neuron that carries nerve impulses toward the cell body is called a(n) __________. 722views
Multiple ChoiceCells that provide metabolic and structural support to the neurons are called __________. 526views
Multiple ChoiceIf your fingers touch a hot stove and you suddenly pull back, you have experienced a reflex. What is the correct order of the information processing in this reflex? 449views
Multiple ChoiceIn descriptions of synapse organization, which type of cell is the transmitting neuron, and which type of neuron, muscle, or gland cell receives the signal? 559views
Multiple ChoiceThe interplay of multiple excitatory and inhibitory inputs most affects what part of a neuron? 477views
Multiple ChoiceWhich of the following is a mechanism by which neurotransmitters can be rapidly cleared from the synaptic cleft? 1282views
Multiple ChoiceWhich of the following correctly pairs up a type of synapse and its characteristic? 477views
Multiple ChoiceIn humans, making more serotonin available to brain cells typically __________. 518views
Multiple ChoiceAcetylcholinesterase is the enzyme that degrades acetylcholine. What effect on nerve transmission would occur following the administration of a chemical that inhibited acetylcholinesterase? 1217views
Multiple ChoiceWhich of the following statements about the transmission across a typical chemical synapse is true? 669views
Multiple ChoiceHow are neurons structurally adapted to chemically transmit impulses to neighboring neurons? 1124views
Multiple ChoiceThe period in which an axon membrane cannot generate an action potential is called __________. 469views
Multiple ChoiceBlocking potassium ion channels in a mammalian cell membrane would __________. 617views
Multiple ChoiceA drug that causes potassium to leak out of a neuron, increasing the positive charge on the outside, would __________. 912views
Multiple ChoiceThreshold is of great significance in the physiology of neurons. What happens if threshold is not reached? 536views
Multiple ChoiceWhich of the following is caused by the death of specific neurons in the brain that release dopamine? 367views
Multiple ChoiceTaking illegal amphetamines ("speed") can induce symptoms similar to which of the following? 349views
Multiple ChoiceWhich of the following neurotransmitters is most closely associated with schizophrenia, addiction, and Parkinson's disease? 548views
Textbook QuestionTest your understanding of the nervous system by matching the following labels with their corresponding letters: CNS, effector cells, interneuron, motor neuron, PNS, sensory neuron, sensory receptor, spinal cord, synapse. 924views
Textbook QuestionThe inside of the neuron has a lower concentration of positive ions than the outside of the neuron. Is the membrane potential positive or negative?623views
Textbook QuestionWhat causes a nerve signal to move from one end of a neuron along the length of the neuron to the other end? What is a nerve signal, exactly? Why can't it go backward? How is a nerve signal transmitted from one neuron to the next across a synapse? Write a short paragraph that answers these questions.397views
Textbook QuestionAnesthetics block pain by blocking the transmission of nerve signals. Which of these three chemicals might work as anesthetics? (Choose all that apply and explain your selections.) a. a chemical that prevents the opening of voltage-gated Na+ channels in membranes b. a chemical that inhibits the enzymes that degrade neurotransmitters c. a chemical that blocks neurotransmitter receptors458views
Textbook QuestionSCIENTIFIC THINKING A proposal to test an SSRI in a large number of individuals with depression was submitted to the FDA. Through random assignments, half of the patients would be controls, receiving nothing at all, and half the patients would receive the drug in pill form. Patients in both groups would note changes in their own mood in a daily journal. What flaw(s) do you note in this experimental design?299views
Textbook QuestionUsing microelectrodes, a researcher recorded nerve signals in four neurons in the brain of a snail, called A, B, C, and D in the table below. A, B, and C can all transmit signals to D. In three experiments, the animal was stimulated in different ways. The number of nerve signals transmitted per second by each of the cells is recorded in the table. Write a short paragraph explaining the different results of the three experiments. 385views