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BIOS 252 Midterm Exam / BIOS252 Midterm Exam (Review and Essay Question Answer) (Up-to-date, ): Anatomy and Physiology II with Lab: Chamberlain College of Nursing |100% Correct |

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BIOS 252 Midterm

1. T Tubules are extensions of the _____ in skeletal muscle?

a. Sarcolemma

2. CN III innervates with of of the following muscle?

a. Medial Rectus

3. The brain and spinal chord are part of the ______ nervous system?

a. Central

4. A wheelbarrow is an example of a _______ class lever?

a. Second

5. The muscle contraction pulling on its insertion point, corresponds to what part of

the lever system?

a. Effort

6. A synovial joint corresponds to what part of the lever stem?

a. Fulcrum

7. When would voltage-gated Sodium channels open rapidly?

a. When a depolarizing graded potential makes the axon membrane

depolarize to threshold

8. Which of the following muscle closes the lips?

a. Orbicularis Oris

9. Synergists prevent unwanted movements during an action, or aid the agonist

during the movement.

, a. True

10. EPSP stands for _________

a. Excitatory postsynaptic potential

11. EPSPs occur when ______

a. Sodium channels are opened and sodium enters the cell

12. The Platysma muscle is a muscle of mastication

a. FALSE

13. The type of muscle contraction where the muscle contracts but exhibits no change

in length is called

a. Isometric contraction

14. Calcium is released from the SR when an action potential opens gated ion

channels located in the

a. T tubules

15. The neurotransmitter found at synapses between the motor neurons and human

skeletal muscles, or at the neuromuscular junction is ________

a. Acetylcholine

16. The neurotransmitters that function primarily in the CNS are dopamine and

serotonin

a. TRUE

17. A propagated change in the membrane potential of part of the cell membrane is an

action potential

a. False – the entire cell membrane

18. A chemical synapse is most likely to dominate which system?

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Exam (elaborations)

BIOS 252 Midterm Exam / BIOS252 Midterm Exam (Review and Essay Question Answer) (Up-to-date, ): Anatomy and Physiology II with Lab: Chamberlain College of Nursing |100% Correct |

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