The muscle disorder myotonic dystrophy can be caused by different genes, on different
chromosomes. This means that the condition is genetically heterogeneic.
Indicate whether the statement is true or false
TRUE
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Spread of bronchiogenic carcinoma to the bronchiomediastinal lymph nodes might be indicated by:
A) loss of cough reflex. B) pleurisy. C) distorted and displaced carina. D) fluid sounds upon lung percussion. E) segmental atelectasis.
Which of the following is NOT true of the endocrine system? The endocrine system ________ .
A. has long-term effects generally B. affects virtually all body tissues' metabolic activities C. is regulated mainly by negative feedback D. releases hormones continusously E. has a slow response time: sec to hours to days
Which two factors or structures increase the speed of nerve impulse conduction?
A) Graded conduction and saltatory conduction B) Myelin sheath and location of axon hillock C) Myelin sheath and graded conduction D) Myelin sheath and saltatory conduction
There are ________ pairs of spinal nerves.
A. 62 B. 31 C. 35 D. 12 E. 24