In the first step of the citric acid cycle, ______ acid combines with acetyl-CoA to produce citric acid
A. oxaloacetic
B. pyruvic
C. lactic
D. alpha ketoglutaric
E. ketoglutaric
A
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Which labeled blood vessel shown in the diagram is the left common carotid artery?
a) A b) B c) E d) F e) H
The external urethral orifice is found at the ________ of the penis.
A. bulb B. crus C. body D. glans E. corpus cavernosum
The spinal tract that relays information concerning crude touch and pressure to the CNS is the
A) corticospinal pathway. B) posterior column pathway. C) spinocerebellar pathway. D) lateral spinothalamic tract of the spinothalamic pathway. E) anterior spinothalamic tract of the spinothalamic pathway.
Dual innervation means that an individual effector
A. receives input from both the somatic and the autonomic nervous systems. B. receives input from both the sympathetic and the parasympathetic nervous systems. C. receives two autonomic axons on each smooth muscle cell. D. may be excited or inhibited by a single division of the autonomic nervous system.