Neurons have cytoplasmic extensions that connect one neuron to another neuron. Given these structures:
1. axon
2. dendrite
3. dendritic spine
4. presynaptic terminal
A) 1,4,2,3
B) 1,4,3,2
C) 4,1,2,3
D) 4,1,3,2
E) 4,3,2,1
Ans: B) 1,4,3,2
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To auscultate the aortic semilunar valve, you would place your stethoscope in the ________.
A) second intercostal space to the right of the sternum B) second intercostal space to the left of the sternum C) fifth intercostal space inferior to the left nipple D) fifth right intercostal space
Late one night, while studying for your anatomy class, you open a box of saltine crackers to do a little snacking. After chewing on a starchy morsel for a few minutes, you begin to notice a sweet taste in your mouth. What accounts for this?
A. Esophageal reflux B. Phagocytosis by the pharyngeal tonsils produces by-products that taste sweet C. "Sweet" taste receptors are slower to respond than others D. Activity of bacteria in the mouth lowers the pH E. Salivary amylase activity
Imagine an athlete jumping up to test her vertical leap. For such a jump, name the muscles acting as powerful agonists, synergists, and antagonists.
What will be an ideal response?
Physiological contracture
A. occurs when muscles are resting. B. is a condition in which cross-bridges cannot release. C. is caused by an abundance of ATP in muscle fibers. D. results when muscles are well exercised. E. results when the neurotransmitter remains in the receptor.