Schwann cells - Study guides, Class notes & Summaries

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...

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 ...

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 ...

Which of the following is NOT a function of the autonomic nervous system? -innervation of glands -innervation of skeletal muscle -innervation of cardiac muscle -innervation of smooth muscle of the digestive tract innervation of skeletal muscle The large commissure that connects the right and left sides of the brain is called the ________. corpus callosum Over 90% of all parasympathetic fibers are derived from cranial nerve ________. X (vagus) In carpal tunnel syndrome, ther...

RNR 2900 Exam 1 Questions & Answers 2024/2025 Robert Hooke - ANSWERSWho first used the word "cell" to describe the chambers he observed in magnified slices of cork Schleiden and Schwann - ANSWERSWho is credited with the cell theory? cell theory - ANSWERSall living organisms are composed of cells, which form a unifying structural basis of organization -no nucleus -no membrane-bound organelles -bacteria, archaea - ANSWERSProkaryotic cells -nucleus -membrane-bound organell...

WCU - PHYS 261 FINAL EXAM LATEST ANSWERS 2022. ) 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 grou...

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

What are the three main divisions of the developing brain? Forebrain Midbrain Hindbrain What is the forebrain (prosencephalon) divided into? Telencephalon Diencephalon What is the telencephalon composed of? Cerebral hemisphere and has structures like the cerebral cortex, white matter and basal ganglia What is the diencephalon composed of? Thalamus and hypothalamus What is the midbrain (mesencephalon) composed of? contains the cerebral peduncles, midbrain tectum, midbrain tegmentum ...

NBME 25| Questions and Answers, 100% Correct Patient had anaphylaxis following the transfusion of fresh frozen plasma. What is the genetic deficiency? IgA deficiency. Patient with this disease may have preformed antibodies against IgA How does sitagliptin work? It is a competitive inhibitor of dipeptidyl peptidase-4 (DPP4). It prevents breakdown of GI incretins (ex: glucagon-like peptide, GLP-1) and promote endogenous release of insulin. ** DPP4 inhibitor increases endogenous insul...

HUBS 191 progress test 2 Latest update already passed central nervous system nervous system consisting of brain and spinal cord peripheral nervous system nervous system consisting of peripheral nerves glia 'glue' provide support for neurons, 5 type, 4 in CNS, 1 in PNS neurons nerve cells, transmission of information dendrites recieve input, send info into cell body cell body contains nucleus and organelles axon carries electrical impulses, may/may not be myelinated a...