Histology
Quiz by OASIS
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28 questions
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- Q1All of the following are true regarding muscle contraction except?The length of the sarcomere decreases due to shortening in the A band and I bandThe muscle contraction shortens about 1/3 of its original lengthThick and thin filaments do not change length during contractionThe thick filaments attach to the Z disk while contraction occurs.30s
- Q2What type of tissue is found in the ducts of the male urethra and epididymis?Simple columnar epitheliumPseudo stratified columnar epithelium- non ciliatedSimple squamous epitheliumPseudo stratified columnar epithelium- ciliated30s
- Q3What type of epithelium do you find in the alveoli of the lungs?Simple squamous epitheliumPseudo stratified epitheliumNone of the aboveSimple cuboidal epithelium30s
- Q4Which of the following statements regarding neuronal injury responses is false?Injured axons in the PNS have the capability to regenerateNeuronal injury can cause axons to degenerate and regenerateInjured axons in the CNS always regenerate due to neuroplasticity and the role of glial cellsReactive gliosis causes scar formation in the CNS and causes a permanent scar30s
- Q5What are sensory neurons located close to the CNS in dorsal root ganglia classified as?Bipolar neuronsMultipolar neuronsInterneuronsPseudo unipolar neurons30s
- Q6Myocardial infarction occurs when an obstructed atherosclerotic coronary artery causes a loss of blood supply to the myocardium. Irreversible damage to cardiocytes occurs when the loss of blood supply lasts more than ________.20 minutes30 minutes1 hour10 minutes30s
- Q7This type of epithelium found in the bladder and allows for its variable shape depending on the volume of liquid.Pseudo stratified columnar ciliatedTransitional epitheliumSimple cuboidalComplex epithelium30s
- Q8Which pair includes one central neuroglia and one peripheral neuroglia?Microglia and ependymal cellsAstrocytes and oligodendrocytesEpendymal cells and satellite cellsSchwann cells and satellite cells30s
- Q9Conduction of impulse is achieved by the release of chemical substances from what?Postsynaptic neuronCentral neurogliaPresynaptic neuronNeurotransmitter30s
- Q10These cells produce myelin sheaths that surrounds the axons and ensures rapid conduction of nerve impulses.Schwann cellsNeuroglial cellsSatellite cellsNodes of Ranvier30s
- Q11Damaged neurons in the CNS are less likely to regenerate because:The statement is false, as reactive gliosis promotes restoration of the neuronal structuresThe astrocytes become under active at the site of damage, and the dense blood-brain barrier restricts movement of glial cellsThe astrocytes become over active at the site of damage, and the dense blood-brain barrier prevent glial cells from responding the damaged siteThe statement is false, as the neurons in the CNS have no issue regenerating30s
- Q12This cell is very important for gas exchange. What type of cell is this most likely?Ciliated columnar epithelium of the respiratory tractTransitional epithelium of the alveoliStratified squamous epithelium of the bronchiSimple squamous epithelium of the lung30s
- Q13In the CNS oligodendrocytes are responsible for myelination of the neurons, in the PNS ________ are responsible for myelination of the neurons in the PNS.Schwann cellsMicrogliaSatellite cellsAstrocytes30s
- Q14All of the following are central neuroglia exceptMicrogliaSchwann cellsEpendymal cellsAstrocytes30s
- Q15What epithelium is responsible for lining sweat glands?Simple columnarSimple cuboidalStratified columnarStratified cuboidal30s