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Study Stack 2
| Question | Answer |
|---|---|
| A term commonly used as a synonym for action potential is | nerve impulse |
| Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO)? | Phenelzine |
| Dopamine, epinephrine, and norepinephrine are classified as: | catecholamines. |
| The two main types of adrenergic receptors are | alpha and beta |
| 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. | hypothalamus |
| The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is: | malleus, incus, and stapes |
| Dynamic equilibrium depends on the functioning of the | saltatory conduction |
| The major hormone produced by the corpus luteum is: | progesterone. |
| The clear and potassium-rich fluid that fills the labyrinth is | endolymph |
| What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium? | Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. |
| Starling’s law of the heart states that, within limits, the longer, or more stretched, the heart fibers are at the beginning of the contraction, the | stronger the contraction |
| Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called | diapedesis |
| The function of which antibody is basically unknown? | IgD |
| Complement can best be described as a(n): | enzyme in blood |
| The _____ postulates that when an antigen enters the body, it selects the clone whose cells are committed to synthesizing its specific antibody and stimulates these cells to proliferate and to thereby produce more antibodies. | clonal selection theory |
| One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? | 20% |
| The major form by which carbon dioxide is transported in the circulatory system is: | as bicarbonate ions. |
| The enterogastric reflex causes: | inhibition of gastric peristalsis |
| The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen. | passively out of |
| The hormone that stimulates the gallbladder to release bile is: | cholecystokinin. |
| Which blood vessel carries absorbed food from the GI tract to the liver? | Portal vein |
| The hormone that stimulates the release of bicarbonate substance from the pancreas is: | secretin |
| Glucose moves from the GI tract into the circulatory system by the process of: | cotransport. |
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