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Nunneley - 2

Physiology wks 7-13

QuestionAnswer
Which of the following is not one of the openings that must be blocked when food moves from the pharynx into the esophagus? A. Oropharynx B. Nasopharynx C. Larynx D. Mouth A. Oropharynx
The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: A. vasoactive intestinal peptide. B. enterogastrone. C. secretin. D. cholecystokinin-pancreozymin. A. vasoactive intestinal peptide.
Which of these is not an example of mechanical digestion? A. Moistening the food B. Changing food from large to small particles C. Propelling food through the digestive tract D. All of the above are examples of mechanical digestion. A. Moistening the food
The act of expelling feces is called A. elimination. B. excretion. C defecation. D. rehydration. C defecation.
An increase in carbon dioxide in the blood causes A. a drop in pH in the blood. B. an increase in pH in the blood. C. no change in pH. D. an increase in partial pressure. A. a drop in pH in the blood (makes the blood more acidic)
Which of the following is a powerful poison that acts directly on any cell and quickly kills it? A. cytotoxin B. phagotoxin C. lymphotoxin D. granulotoxin C. lymphotoxin
During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? A. It flows into the inferior vena cava. B It flows into the superior vena cava. C. It flows into the ductus venosus. D. None of the above A. It flows into the inferior vena cava (since it comes from the inferior portion of the body)
What happens to the oxygenated blood returned from the placenta via the umbilical vein? A. It flows into the inferior vena cava. B. It flows into the superior vena cava. C. It flows into the ductus venosus. D. It flows into the ductus arteriosus. A. It flows into the inferior vena cava.
where do frequencies—from high to low pitches—cause activity in the hair cells within the cochlear duct? A. the base of the cochlea B the apex of the cochlea C. basilar membrane D. between the base and the apex of the cochlea B the apex of the cochlea & D. between the base and the apex of the cochlea
The _____ consists of several structures that lie beneath the thalamus and form the floor of the third ventricle and the lower part of its lateral walls. A. hypothalamus B. pons C. cerebellum D. diencephalon A. hypothalamus
The set of coordinated commands that control the programmed muscle activity mediated by extrapyramidal pathways is called the A. extrapyramidal tract. B. pyramidal tract. C. motor tract. D. motor program. D. motor program.
Which of the following is not associated with the oculomotor nerve? A. Movement of external eye muscles B. Closing and opening of the eye (blink reflex) C. Movement of intrinsic eye muscles D. Proprioception of eye muscles B. Closing and opening of the eye (blink reflex)
In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. True False True - it appears to "jump" but actually travels under the myelin
Which membrane receptor acts to directly change ion permeability when stimulated? A. Ionotropic receptor B. Metabotropic receptor C. Gated-channel receptor D. G-protein-coupled receptors C. Gated-channel receptor
In action potential: A Plasma membrane is impermeable to Na+ & K+ ions B Na+ ions move extracellularly C Charges become equal on outside + inside of plasma membrane D Outside of plasma membrane is negatively charged, the inside is positively charged D Outside of plasma membrane is negatively charged, the inside is positively charged
Created by: Leifadam
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