Epidural anesthesia is introduced to the epidural space between the ________ to block pain signals during pregnancy.
A. dural sheath and dura mater
B. dural sheath and vertebral bones
C. arachnoid mater and pia mater
D. dura mater and arachnoid mater
E. dura mater and pia mater
Answer: B
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If an injury caused damage to the insertion of the biceps brachii muscle (the anterior muscle of the upper arm), the injury would be nearest:
a. the shoulder b. the middle of the upper arm c. the elbow d. none of the above
What percentage of the O2 in the blood is dissolved?
a. 0% b. 0.5% c. 1.5% d. 5% e. 15%
The sodium-potassium ion exchange pump
A) is not involved in producing the resting membrane potential. B) transports sodium ions into the cell during depolarization. C) transports potassium ions out of the cell during repolarization. D) moves sodium and potassium opposite to the direction of their electrochemical gradients. E) depends on a hydrogen gradient for energy.
Sensory neurons ________.
A. are bipolar, and carry impulses away from the CNS B. are multipolar, and carry impulses toward the CNS C. are pseudounipolar, and carry impulses toward the CNS D. are multipolar, and carry impulses away from the CNS