BIOS 252 A& P II MIDTERM EXAM (ESSAY AND
REVIEW AND QUESTION & ANSWER)
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
REVIEW AND QUESTION & ANSWER)
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
