BIOS 252 COMP EXAM QUESTIONS AND ANSWERS 100% PASS

BIOS 252 COMP EXAM QUESTIONS AND ANSWERS
100% PASS

When compared to a classic lever system, the synovial joints of our Musculoskeletal system play the role of the
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_________?
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A. Weight
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B. Force
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C. Fulcrum
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D. Lever
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E. Resistance - Answer ✔✔ - C. Fulcrum.
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Which of the following event will occur when depolarizing graded potential's reach the membrane of the axon Hilloc
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causing its membrane potential to reach threshold?
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A. Ligand-gated Ca++ channels close rapidly
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B. Voltage-gated Ca++ channels open rapidly
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C. Ligand-gated Na+ channels close rapidly
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D. Voltage-gated Na+ channels open rapidly
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E. Ligand-gated Cl+ channels close rapidly - Answer ✔✔ - D. Voltage-gated Na+ channels open rapidly.
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The attachment of the muscles tendon to the stationary bone is called the _________? ; The attachment of the
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muscles other tendon to the movable bone is called the__________?
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A. Origin ; action
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B. Insertion ; action
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C. Origin ; insertion
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D. Stabilizer ; mover
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E. Insertion ; origin - Answer ✔✔ - C. Origin ; Insertion
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Which of the following fascicular arrangements would best be described as fascicles arranged on only one side of t
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tendon?
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A. Unipennate
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B. Bipennate
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C. Fusiform
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D. Circular
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E. Multipennate - Answer ✔✔ - A. Unipennate
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Which type of synapse involves the secretion of a neurotransmitter across the synapse to stimulate the post-synap
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cell?
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A. Mechanical
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B. Nominal
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,C. Electrotonic bv




D. Processing bv




E. Chemical - Answer ✔✔ - E. Chemical
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Your friend nods 'yes' to you, going through flexion, extension, and hyper extension in their enthusiastic response.
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This movement at the fulcrum represents a
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A. First-class lever system
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B. Second-class lever system
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C. Third-class lever system
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D. Fourth-class lever system
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E. Does not represent a lever system - Answer ✔✔ - A. First-class lever system
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The sarcoplasmic reticulum stores bv bv bv bv




A. Oxygen bv




B. Glycogen bv




C. ATP bv




D. Calcium ions bv bv bv




E. Glucose - Answer ✔✔ - D. Calcium ions
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Which of the following is NOT a function of smooth muscle tissue?
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A. Altering the diameter of the respiratory passageways
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B. Elevating hairs on the arm
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C. Blinking the eyelid bv bv bv bv




D. Moving food materials along the digestive tract
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E. Moving urine from the kidneys into the bladder - Answer ✔✔ - C. Blinking the eyelid
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In an isometric contraction, the ,uncle develops tension but does not?
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A. Shorten bv




B. Lengthen bv




C. Expend energy bv bv




D. Conduct electrical current
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E. Exhibit elasticity - Answer ✔✔ - A. Shorten
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_________ is the summation of postsynaptic potentials in response to stimuli that occur at different locations in the
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membrane of a postsynaptic cell at the same time
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A. Cortical summation bv bv bv




B. Spatial summation bv bv bv




C. Temporal summation bv bv




D. Tactile summation bv bv




E. Olfactory summation - Answer ✔✔ - B. Spatial summation
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Which of the following molecules energizes the myosin club-head so that it can pull the actin molecule?
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A. Troponin bv bv




B. Tropomyosin bv




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