Following strenuous exercise, blood levels of lactic acid are ________ compared to pre-exercise levels. This change in acid concentration causes a reflex ________ in ventilation by activating ________
A. decreased; decrease; peripheral chemoreceptors
B. decreased; decrease; central chemoreceptors
C. increased; increase; baroreceptors in the aortic arch
D. increased; increase; central chemoreceptors
E. increased; increase; peripheral chemoreceptors
E
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The outermost lining of the heart is the _________________________.
Fill in the blank(s) with the appropriate word(s).
How do cardiomyocytes communicate with one another?
A) Neurotransmitters B) Gap junctions C) Synapses D) Tight junctions
During which process do DNA strands unwind and DNA polymerase begin attaching complementary DNA nucleotides along each strand?
A) replication B) mitosis C) transcription D) mutation E) translation
Channels within bone, involved with cell-to-cell communication, are called
A) canaliculi. B) lacunae. C) lamellae. D) perforating canals. E) Haversian canals.