Presynaptic - Study guides, Class notes & Summaries

Beta1 Correct Answer-Increases: heart rate, force of contraction, velocity of conduction in AV node Renin release by kidney Beta 2 Correct Answer-Bronchial dilation relaxation of uterine muscle vasodilation Alpha 1 Correct Answer-Vasoconstriciton Contraction of bladder neck and prostate Alpha 2 Correct Answer-Located in presynaptic junction autoreceptor- opposing effects of alpha-1 (shuts off NE release) Also located in the brain stem Dopamine Correct Answer-Dilates renal blood...

Neuropharmacology of the PNS Exam Questions and Answers | 100% correct Neuropharmacology of the PNS Exam Questions and Answers | 100% correct ________________________________________ 1. What is the primary therapeutic application of Methyldopa, and what makes it a preferred choice for managing hypertension in pregnant patients? A) Reduces heart rate; safe during pregnancy B) Lowers blood pressure; safe during pregnancy C) Increases blood volume; preferred for renal patients D) Enhance...

The nervous system is composed of what two main classes of cells? What are they? correct answersNeurons and glial cells -- neurons = the basic signaling units that transmit information through the nervous system -- glial cells = non neural cells that provide structural support and electrical insulation to neurons. Glia are involved in metabolic functions, repair and protection of neurons, and improve conduction of signals What does presynaptic and postsynaptic mean? correct answersMost ...

BIOL 3240 Exam 2 | Complete Solutions (Verified) The process whereby a neuron communicates with another cell, which can be another neuron or a muscle cell Synaptic transmission Who was the first person to coin the term "synapse?" Charles Sherrington The region between pre and post synaptic cells zone of apposition (chemical/electrical) synapses are used to generate rapid and stereotyped depolarizing signals Electrical (chemical/electrical) synapses are capable of variable signaling, mediat...

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 ...

NSC 3361 Exam 1 Questions and Answers All Correct Sequence of transmission at chemical synapse - Answer-1. Action potential travels down axon to axon terminal. 2. Voltage-gated calcium channels open and Ca2+ enters. 3. Synaptic vesicles fuse with membrane and release transmitter into the cleft. 4. Transmitter binds to post-synaptic receptor, causing EPSP or IPSP. 5. May bind to the presynaptic autoreceptors, decreasing release. 6. Neurotransmitter is inactivated by degradation or reuptak...

Stahl’s Essentials of PsychoPharm Quiz 1 – With Questions & Answers (Graded A+) Stahl’s Essentials of PsychoPharm Quiz 1 – With Questions & Answers (Graded A+) neurons - ANSWER - cells of chemical communication within the brain. have many sizes, shapes and lengths that determine function. localization in brain also affects function when neurons malfunction - ANSWER - behavioural symptoms occur that may improve or worsen with drugs general structure of a neuron - ANSWER - dendri...

56 y/o F comes to physician 3 wk hx increasing weakness of arms and legs. - Smoking - Weakness of hip girdle muscles, lesser weakness of shoulder girdle muscles. - Weakness improves with repetitive testing. - Hilar lung mass What's impaired: - Acetylocholinesterase - Binding of ACh on postsynaptic membrane - Direct depolarization of muscle by Ca - Postsynaptic membrane potential - Presynaptic release of ACh correct answers Presynaptic release of ACh - Lambert Eaton myasth...

NSG 552 Psychopharmacology Exam 1 Study Guide Complete Updated 2024/2025. Phenylalanine (amino acid from diet) -> phenyalanine hydroxylase -> Tyrosine -> Tyrosine hydroxylase -> DOPA -> Dopa decarboxylase -> Dopamine KEY POINT: Dopamine is synthesized directly from tyrosine or indirectly from phenylalanine • Dopamine is packed and stored into synaptic vesicles via the vesicular monoamine transporter (VMAT2) and stored until its release into the synapse. • When dopamine...

Myasthenia gravis is an autoimmune disease in which a. neuronal demyelination disrupts nerve transmission. b. muscles become increasingly bulky but weakened. c. acetylcholine receptors are destroyed or dysfunctional. d. acetylcholine release from motor neurons is disrupted. - c. acetylcholine receptors are destroyed or dysfunctional Myasthenia gravis is an autoimmune disease in which acetylcholine receptors are destroyed or dysfunctional. Multiple sclerosis is an autoimmune disease in whi...