Among its other purposes, how is the Valsalva maneuver used?
A. To aid in defecation and urination
B. As part of the procedure for giving CPR to a person in respiratory arrest
C. To ventilate the lungs during eupnea
D. To expel more than the usual tidal volume from the lungs
E. To clear carbon monoxide from the body and replace it with oxygen
A. To aid in defecation and urination
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The term prone means lying on the abdomen, face downward.
Answer the following statement true (T) or false (F)
The inspiratory neurons
a. activate the phrenic nerve, bringing about contraction of the diaphragm b. are stimulated by stretch receptors c. are inhibited by the DRG when the DRG is stimulated by the apneustic area d. have characteristics a and c e. have characteristics b and c
Which of the following statements regarding the structure and function of cell membranes is correct?
A. The phospholipid bilayer is arranged so that the hydrophilic heads of the phospholipid molecule face the extra- and intracellular fluids. B. Some proteins integrated into the membrane serve as channels for the passage of nonpolar molecules through the membrane. C. Peripheral membrane proteins function as channels associated with transport of ions through the membrane. D. Cholesterol molecules function to transport ions from one side of the plasma membrane to the other. E. The plasma membrane is a layer of phospholipid molecules with their hyrophilic head groups in contact with the extracellular solution and the hydrophobic tail groups in contact with the intracellular solution.
The motor division of the nervous system carries action potentials from ________.
A. the CNS to the effectors B. the sensory receptors.to the CNS C. the CNS to the sensory receptors D. the effectors to the CNS