Myelin sheath - Study guides, Class notes & Summaries

CHAPTER 3 NEUROSCIENCE CHAPTER LEARNING OBJECTIVES 1. Understand the key methods that scientists use to learn about brain anatomy and functioning. • Neuroscientists examine autopsy tissue and patients with localized brain damage to learn about brain anatomy and brain function. • EEGs and neuroimaging, such as PET scans and fMRI, allow scientists to study brain function in the living brain. 2. Describe the two major types of cells in the nervous system and describe the prima...

Walden University Advanced Pathophysiology Final Exam (Nurs 6501) Questions & Answers What is the link between major depression and cortisol secretion? Individuals with depression show that persistently elevated plasma cortisol levels can result in inflammation that is believed to trigger depression A patient has chronic anemia associated with chronic renal failure. What substance does the healthcare professional tell the patient is needed to treat this anemia? Erythropoietin What is the ...

Bio Chem Rutgers Murphy Final Complete Study Questions And Answers conversion of acetyl-CoA to malonyl-CoA is inhibited by Glucagon, Epinephrine, Palmitoyl-CoA The recycling rate of triacylglycerols to fatty acids is inhibited by insulin Lipolysis is used to degrade triacylglycerols Glycerol from the hydrolysis of triacylglycerols is transported by the blood to the liver What is the major mechanistic difference in purine and pyrimidine biosynthesis purines are synthesized on the ring o...

Multiple Sclerosis (MS) Correct Answer-_________________________________ -An immune mediated, progressive demyelinating disease of the CNS. MS Correct Answer-clinical manifestations of this vary and have different patterns. frequently, the disease is relapsing and remitting; has exacerbations and recurrences of s/s; including: fatigue, weakness, numbness, difficulty in coordination, loss of balance, pain and visual disturbances ataxia Correct Answer-abnormal gait is also called _______...

Central Nervous System -Correct Answer "general" of the body; integration of sensory input and origin of motor responses • brain • spinal cord Peripheral Nervous System -Correct Answer body; sensory input and motor output • nerves • sensory receptors • motor neurons sensory receptors -Correct Answer Afferent neurons → Admit signals differentiated based on location • somatic • visceral somatic sensory receptors -Correct Answer receptors and neurons that ar...

BIO 242 A Final Exam Questions and Answers Already Passed What defines the threshold of a neuron? a. The time between neurotransmitter binding and action potential firing. b. The voltage causing sodium ion inflow and reversal of resting potential. c. The total sodium ions entering before inactivation gates close. d. The neurotransmitter amount needed to trigger an action potential. e. The voltage across the resting cell membrane. c. The total number of sodium ions that enters the ce...

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...

Science Olympiad Anatomy and Physiology Latest Update graded A+ Dendrite Receive stimulus and carries it impulses toward the cell body. Cell Body with nucleus Fiber which carries impulses away from cell body schwann cell cells which produce myelain or fat layer in the PNS Myelin Sheath Lipid layer around the axon; which insulates the axon Node Ranvier Gaps or nodes in the myelin sheath impulse -self propagating -mechanism, potassium and sodium pump synapse -junction betwee...

R.M.A. Exam Practice Questions with 100% Correct Answers | Verified | Latest Update body activities such as breathing, circulation , and heartbeat are regulated by the - CORRECT ANSWER autonomic nervous system which gas is brought into the body , and which is elimated by the respiratory system, - CORRECT ANSWER Oxygen , carbon dioxide the muscular tissue of the heart is called the - CORRECT ANSWER Myocardium blood enters the right atrium of the heart from the - CORRECT ANSWER Vena ca...

1 BATE'S CH. 17 NEURO HEALTH ASSESSMENT QUESTIONS AND ANSWERS, RATED A+ Name Four regions of the brain Cerebrum diencephalon Brainstem Cerebellum CN Name 4 subdivisions/lobes of cerebral hemisphere Frontal Parietal Temporal Occipital Neuron consists of... Cell body & axons Gray matter consists of Cell bodies White matter consists of Axons w/myelin sheath (gives it white color) Myelin sheath fxn Creates white color and makes impulses to travel faster Additional clusters of ...