The ________ separates the abdominal and thoracic cavities.
A. liver
B. lungs
C. diaphragm
D. rib cage
Answer: C
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The vessel seen running the length of the posterior pancreas on sectional images is the SMV.
Answer the following statement true (T) or false (F)
Which is TRUE about gastric motility?
A. The basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present. B. Gastric contractions are strongest in the fundus of the stomach. C. The force of contraction is decreased by gastrin and increased by enterogastrones. D. When a wave of excitation reaches the pyloric sphincter, action potentials become inhibitory and the sphincter opens wide to allow chyme to exit. E. The term "slow waves" refer to gastric contractions, while "pacemaker" refers to gastric action potentials.
For most cells, the membrane potential is closer to the Ek+ (-90 mV) than for ENa+ (+ 60 mV). This is because
a. EK+ <<<< ENa+, and systems tend toward lower energy states. b. cells like potassium better than sodium, so they work to maintain potassium closer to its equilibrium distribution. c. cell membranes are equally permeable to Na+ and Cl-, so every time a Na+ comes in, its depolarizing effect is negated by a Cl- ion. d. cell membranes are more permeable to K+ than Na+, so there are a greater number of pathways available for K+ to move towards its equilibrium distribution than are available for Na+ to do the same. e. none of these.
The hypothetico-deductive method is common in physiology, whereas the inductive method is common in anatomy.
Answer the following statement true (T) or false (F)