BIOS 252 A& P II Midterm Exam (Essay and Review and Question Answer)

1. 1.T Tubules are extensions of the _____ in skeletal muscle? a. Sarcolemma 1. CN III innervates with of of the following muscle? a. Medial Rectus 2. The brain and spinal chord are part of the ______ nervous system? a. Central 3. A wheelbarrow is an example of a _______ class lever? a. Second 4. The muscle contraction pulling on its insertion point, corresponds to what part of the lever system? a. Effort 5. A synovial joint corresponds to what part of the lever stem? a. Fulcrum 6. When would voltage-gated Sodium channels open rapidly? a. When a depolarizing graded potential makes the axon membrane depolarize to threshold 7. Which of the following muscle closes the lips? a. Orbicularis Oris 8. Synergists prevent unwanted movements during an action, or aid the agonist during the movement. a. True 9. EPSP stands for _________ a. Excitatory postsynaptic potential