BIOS 252 Midterm Exam Review – Question and Answers
(Graded A)
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
(Graded A)
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
