What happens as a result of a pneumothorax?
A) Lungs inflate.
B) Lungs collapse.
C) Lungs exhale.
D) Lungs rotate.
Answer: B
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Your company wants to design a drug that inhibits unwanted motor contraction. Which is the best target for the drug?
A. The muscle fiber's motor neuron B. The antagonistic muscle's fibers C. Descending inputs at the middle level of the motor control hierarchy D. Golgi tendon organs E. Interneurons in the local spinal cord region
Match the structure with the description.
a. 1 b. 2 c. 3 d. 4 e. 5 f. 6 g. 7 h. 8 i. 9 j. 10 k. 11 1. _____ Pulmonary artery 2. _____ Tricuspid valve 3. _____ Pulmonary vein 4. _____ Mitral valve 5. _____ Right ventricle 6. _____ Left ventricle 7. _____ Lungs 8. _____ Aortic semilunar valve 9. _____ Right atrium 10. _____ Pulmonary semilunar valve 11. _____ Left atrium
The startle reflex occurs when unexpected sounds reach the:
A) thalamus. B) hypothalamus. C) midbrain. D) pons.
Which of the following statements concerning the process of tissue repair is false?
A. In replacement, a new type of tissue develops that eventually results in scar production. B. Permanent cells have a limited ability to replicate. C. Stable cells do not actively replicate after growth but retain the ability to regenerate. D. In regeneration, destroyed cells are replaced by the same type of cells. E. Labile cells cannot be replaced by the process of regeneration.