Spinal nerves from different segments combine to form nerve plexuses. Nerves from which two plexuses combine to form the radial nerve? Group of answer choices A. lumbar and sacral plexuses B. brachial and sacral plexuses C. cervical and brachial plexuses D. cervical and sacral plexuses
Spinal nerves from different segments combine to form nerve plexuses. Nerves from which two plexuses combine to form the radial nerve? Group of answer choices A. lumbar and sacral plexuses B. brachial and sacral plexuses C. cervical and brachial plexuses D. cervical and sacral plexuses
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
Spinal nerves from different segments combine to form nerve plexuses. Nerves from which two plexuses combine to form the radial nerve?
Group of answer choices
A. lumbar and sacral plexuses
B. brachial and sacral plexuses
C. cervical and brachial plexuses
D. cervical and sacral plexuses
____________________________________________________________________________
The resting membrane potential of a nerve cell is -70 mV. If threshold is -60 mV and a medication causes a patient's resting membrane potential to change to -75 mV, what is the likely outcome?
Group of answer choices
A. normal generation of action potentials
B. it will be easier to generate an action potential
C. it will be more difficult to generate an action potential
D. facilitation will occur at the cell membrane
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