Nodes of ranvier - Study guides, Class notes & Summaries

T or F: Cardiac muscle contraction is considered to be a voluntary movement. - Answer-False T or F: In the gastrointestinal tract, smooth muscle is the major muscle type. - Answer-True T or 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 What is the normal movement of blood through the heart? - Answer-Right atrium- right ventricle- lung- left atrium- left ventricle Nor...

Aqa A Level psychology- Biopsychology exam questions and answers 2024 100% pass What components make up the Central Nervous system - Answer-The brain and spinal cord The peripheral nervous system has two divisions, what are they? - Answer-Autonomic nervous system and Somatic Nervous system Which division of the Peripheral Nervous System contains the sympathetic and parasympathetic divisions? - Answer-Autonomic What is the somatic nervous systems role? - Answer-To communicate with sense ...

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 -&...

LIFSCI 7B XL - Animation: Reading Phylogenies Copy Questions and Answers Rated A+ What is the role of the axon hillock in neural signaling? The axon hillock integrates incoming signals and determines whether to initiate an action potential. How does myelination affect the speed of action potential propagation along an axon? Myelination increases the speed of action potential conduction by enabling saltatory conduction, where the signal jumps between nodes of Ranvier. Why do vo...

Which of the following does NOT correctly match a term with its description? Depolarization --- Period during which sodium ions diffuse out of the neuron due to a change in permeability for these ions. Repolarization --- The interior of the cell becomes more negative due to the opening of potassium ion gates. Relative refractory period --- An exceptionally strong stimulus can trigger a response (action potential). Absolute refractory period --- Period during which the neuron cannot respond...

How do local anesthetics block the nerve impulse from reaching the brain? By permanently depolarizing the nerve cell membrane By overwhelming influx of fluoride ions By blocking sodium channels, thereby preventing nerve cell depolarization and impulse propagation By causing massive neurotransmitter release without uptake. By blocking sodium channels, thereby preventing nerve cell depolarization and impulse propagation How do local anesthetics stop working? By diffusion of the lo...

Filtered wastes from the glomerulus will move in the following order: Bowman's capsule-proximal tubule-distal tubule-loop of henle- collecting duct. (True/False) - False. Bowman's capsule- proximal tubule- loop of henle- distal tubule- collecting duct. Specificity of hormone action in the target cells is determined by receptors. (True/False) - True. The area of nerve axon not wrapped by myelin sheath is called the nodes of Rnavier where action potential is insulated. (True/False) - False. My...

Pathophysiology: Nervous System Exam Questions with 100% Verified Correct Answers What are the 2 types of cells in the nervous system - Correct Answer Neurons and neuroglia (glial cells) Where are dendrites and what do they do? - Correct Answer Come off of the cell body; receive signals from other cells Where is the axon terminal - Correct Answer Other side of the cell body The axon is the - Correct Answer Long part that connects the cell body to the axon terminal Cell bodies packed...

Pharmacologic behavior (AAPD QE Prep Dr. Nelson) Exam Questions With Verified Answers What was the chronology of anesthetic discovery (starting with cocaine till now)? - answer1) Cocaine (1885) 2) Procaine (1904) 3) Lidocaine (1943) 4) Articaine (2000) What Cranial nerve do we block most frequently in dentistry? what are its branches and functions? - answer1) Cranial Nerve (V); Trigeminal Nerve 2) 3 Branches: a) V1: Opthalmic branch b) V2: Maxillary branch (Superior alveolar, etc) c...

Final Biomechanics Questions & Answers A+ 2024 New Update when someone moves their line of gravity outside to the edge of the base of support, what happens to their stability? - ANS-stability decreases term used to describe the area of skin that is innervated by specific levels of the spinal cord? - ANSdermatome What type of cartilage is articular cartilage? - ANS-hayline what force couple produces posterior pelvic tilt - ANS-hip extensors and trunk flexors the femoral nerve innerv...