Node of ranvier - Study guides, Class notes & Summaries

NU 545 Advance Pathophysiology Unit 2 Exam- University of South Alabama Exam Questions With Verified Answers A+ Graded Afferent - ANS Towards (towards the spinal cord) Efferent - ANS Away From (away from the spinal cord) Which nerves are incapable of regeneration? - ANS Neurons in the Central Nervous System (CNS) do not divide and injury causes permanent loss. Which injury to nerves has better outcomes? Crushed or Severed/Cut - ANS Crushed nerves recover better How do peri...

NSG 527 Theory Final Exam Questions and Answers (UPDATED) 2023/2024 Assured A+. 1. What is the major inhibitory neurotransmitter in the CNS a. Glutamine b. Acetylcholine c. GABA d. Serotonin - ANSWER-c. GABA 2. What is the major mechanism of neurotransmitter action in the nervous system? a. The release of neurochemicals into the synapse b. Electrical impulses to move the message down the axon c. Receptors to receive the message d. Termination of neurotransmitter action in the sympathet...

Metastatic calcification - Calcium infiltration into *normal tissue* (Hypervitaminosis D) Dystrophic calcification - Calcium infiltration into *abnormal tissue* (atherosclerosis, atheroma) Caseous degeneration - Degeneration associated with tuberculosis Enzymatic degeneration - Degeneration associated with the pancreas Fatty degeneration - This degeneration is seen in the liver (nutmeg liver)and heart (tabby cat heart). In blood vessels, it begins as a fatty dot -> fatty streak -&...

1. Which branching structures carry information toward the cell body of a neuron? a. Synapses b. Axons c. Dendrites d. Nodes of Ranvier ANS: C 2. What is the name of the enzyme that destroys acetylcholine? a. Dopamine b. ACh c. Acetylcholinesterase d. Norepinephrine ANS: C 3. What term describes the hopping of the action potential (nerve impulse) along the axon from one node (of Ranvier) to the next? a. Myelination b. Depolarization c. Saltatory conduction d. Repolarization ANS:...

EXPH 386 Exam 3 Latest Update Graded A+ coordination and integration of the muscles of the body together with the nerves that supply them Neuromuscular system Cell body (soma) action dictates the critical firing rate of the action potential Cell body (soma) contains what structures involved in replication and transmission of the genetic code Are larger cell bodies (somas) associated with higher or lower critical firing rates? higher short neural branches that receive impulses...

Afferent - Towards (towards the spinal cord) Efferent - Away From (away from the spinal cord) Which nerves are incapable of regeneration? - Neurons in the Central Nervous System (CNS) do not divide and injury causes permanent loss. Which injury to nerves has better outcomes? Crushed or Severed/Cut - Crushed nerves recover better How do peripheral nerves repair themselves? - Axonal Reaction Name 8 local changes that occur when an axon is severed - 1. Cut end retracts and the axolemma cove...

T/F: Cardiac muscle contraction is considered to be voluntary movement. - Answer-False It moves involuntarily. T/F: In the gastrointestinal tract, smooth muscle is the major muscle type. - Answer-True T/F: In our body, approximately 8 liters of intestinal juices are secreted into the GI tract daily, but only 100 ml of water is secreted into the feces. - Answer-True T/F: Normal movement of blood flow in the heart is: left atrium-left ventricle-lung-right atrium-right ventricle. - Answer...

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....

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...

PATHOLOGY SECTION - NBCE Part I Board Review with Complete Solutions Latest Updated 2024 Metastatic calcification - Correct Answer Calcium infiltration into *normal tissue* (Hypervitaminosis D) Dystrophic calcification - Correct Answer Calcium infiltration into *abnormal tissue* (atherosclerosis, atheroma) Caseous degeneration - Correct Answer Degeneration associated with tuberculosis Enzymatic degeneration - Correct Answer Degeneration associated with the pancreas Fatty degeneratio...