In spinal reflex pathways, motor neurons receive inputs from
a. sensory afferents and/or internurons.
b. cortical neurons whose cell bodies reside in the primary motor cortex.
c. cortical neurons whose cell bodies reside in the somatosensory cortex.
d. cerebellar neurons.
e. brain stem neurons.
A
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The muscle group nearest the vertebral column is the
A) thoracis. B) spinales. C) capitis. D) longissimus. E) iliocostalis.
An ECG represents comparisons in __________ detected by electrodes at __________ points on the body surface, not the actual potential
Fill in the blank(s) with correct word
Which of the following is NOT a true statement about the conduction of action potentials in axons?
A. The inward Na+ current of an AP generates an AP in an adjacent portion of the axon. B. All APs in a given axon are identical in magnitude and duration. C. APs can be conducted in only one direction. D. The velocity of AP conduction is positively correlated with axon diameter. E. The frequency of APs is limited by the length of the refractory period.
Anaerobic exercise is endurance-type exercise
Indicate whether the statement is true or false