Schwann cells Study guides, Class notes & Summaries

When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate. - ANSWER TRUE Briefly explain why the action potential flows only from the axon hillock to the terminal web. - ANSWER During the course of an action potential there is a refractory period that makes sure the action potential can't trigger backwards by the use of caps on gated sodium channels. The caps close and keeps the action potential flowing in one direction. How do the glial cells (i.e., m...

OCCTH 583 Midterm Latest Update Graded A+ Dendrites Branchlike parts of a neuron that are specialized to receive information Cell Body / Soma The part of the neuron that contains the nucleus, which processes and integrates information Axon A threadlike extension of a neuron that carries nerve impulses away from the cell body A bundle of axons makes up a ___ Nerve Axon Collaterals Branches of the axon that allow one neuron to pass the signal to multiple effectors Where is t...

The pre-synaptic cell bodies in the sympathetic division are located in? (Pg 57) - Answer The Nucleus AND IML Cell Column Patient presents with redness, edema, and pain. What classification of burn is this? (Pg 15) - Answer 1st degree superficial What are the layers of the skin from superficial to deep? (Pg 12) - Answer Epidermis, dermis, subcutaneous, deep fascia, skeletal muscle John flexes his elbow to 90 degrees. What plane and axis is this movement occurring in? (Pg 5) - Answer Sag...

Who speculated that cells are living entities and plants are aggregates of cells? - Schleiden Who proposed that all cells originate from other cells? - Virchow Which of these statements is not a part of the cell theory? All cells are replaced All living organisms are composed of one or more cells new cells come only from pre-existing cells by cell division cells are the smallest units of life - all cells are replaced The field that involves the study of cells and how they interact with ot...

The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are a. Neurofibrils b. Chromatophilic substances (nissl bodies) c. Axons d. Dendrites - d. Dendrites The two types of cells of the nervous system are a. Axons and dendrites b. Neurons and neuroglia c. Motor neurons and sensory neurons d. Schwann cells and microglia - b. Neurons and neuroglia The functional connection between two neurons is a(n): a. Dendrite b. Gap junction ...

WCU - PHYS 261 FINAL EXAM LATEST ANSWERS 2023. Nucleic acids are polymers of units called A) ribose. B) bases. C) fatty acids. D) amino acids. E) nucleotides. 6) Cell membranes are said to be A) actively permeable. B) impermeable. C) freely permeable. D) selectively permeable. E) none of the above 7) In humans, only __________ cells have flagella. A) sperm B) intestine lining C) stomach lining D) respiratory tract lining E) two of the above 8) The addition of a phosphate group ...

Neuroscience EXAM 1– USA (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| A Grade QUESTION myelin sheath Answer: -insulating specialized glial cells -oligodendrocytes make myelin in CNS -Schwann cells make myelin in PNS QUESTION CNS neurotransmitter Answer: excitatory: glutamate inhibitory: GABA QUESTION PNS neurotransmitter Answer: acetylcholine QUESTION ANS neurotransmitter Answer: acetylcholine an...

Neuroscience 6th Edition Test Bank by Purves | 100% Correct Answers | 34 Chapters.VERIFIEDMultiple Choice 1. Which part of DNA is transcribed into messenger RNA? a. Exon b. Intron c. Promoter d. Non-coding DNA e. Regulatory DNA Answer: a Textbook Reference: Genetics and Genomics Bloom’s Level: 2. Understanding 2. Genomics is the analysis of a. coding DNA sequences for a species. b. regulatory DNA sequences for an individual organism and a species. c. coding and regulatory DNA sequ...

Excitatory synapses make the post-synaptic cell less likely to fire. - ANSWER-False The neural tissues are: - ANSWER-Spinal cord, sensory neurons, and brain How do the glial cells (i.e., myelin sheath) speed up the firing of neurons? - ANSWER-The cell wraps extensions of a fatty insulating substance (myelin) around the axons of neurons. The action potential is: - ANSWER-A result of the movement of ions. Receptors are made from membrane-bound polyribosomes. - ANSWER-True List the 4...

Where can you find bipolar neurons? Retina of the eye, olfactory region, and inner ear Where can you find unipolar neurons? Most sensory Where can you find multipolar neurons? Most CNS and efferent neurons Neuroglia of the CNS -astrocytes (blood-brain barrier) -microglial cells -ependymal cells -oligodendrocyte Neuroglia of the PNS -Schwann cells -satellite cells Olfactory nerve (CNI) 1- Smell Optic nerve (CNII) 2- visual