Which center bears the primary responsibility for generating the respiratory rhythm, but is influenced by several other centers?
A. PRG
B. DRG
C. VRG
D. SRG
C. VRG
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IgA is passed to a newborn through maternal ________ and breast milk.
A. feces B. blood C. colostrum D. placenta
What is the type of RNA called that delivers the appropriate amino acids within the cytoplasm to their designated site at the ribosome?
a. messenger RNA b. deliver RNA c. ribosomal RNA d. transfer RNA e. cytoplasm RNA
Rigor mortis occurs after death because
A. cross-bridges never form. B. anaerobic respiration is occurring. C. myosin levels decline at death. D. cross-bridges form but can't release. E. Ca2+ is actively transported back to the sarcoplasmic reticulum.
In which of the following situations does a resting membrane potential exist?
A. a relaxed muscle fiber B. a conducting neuron C. a stimulated sensory receptor in the skin D. a contracting cardiac muscle cell E. the eye seeing an image