A 35-year-old woman complains of drooping eyelids, weakness in her limbs, and poor physical endurance. What is a likely cause of her symptoms?
A. Duchenne muscular dystrophy
B. Tetanus
C. Botulism
D. Myasthenia gravis
E. Poisoning by curare
D. Myasthenia gravis
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Janet is homozygous dominant for the wild-type allele of the gene that when mutant
causes cystic fibrosis. Her brother Henry is a heterozygote. They both do not have the disease cystic fibrosis. Indicate whether the statement is true or false
______________ is the inability to smell.
Fill in the blank(s) with the appropriate word(s).Fill in the blank(s) with the appropriate word(s).
Which of the following is involved in breaking up old erythrocytes and disposing of the cellular remains?
A. Stomach B. Heart C. Bone marrow D. Lungs E. Spleen
Articular cartilage
A. is a double layer of tissue that encloses a joint. B. is a thin lubricating film covering the surface of a joint. C. provides a smooth surface where bones meet. D. is a layer of tissue that is continuous with the periosteum. E. lines the joint everywhere except over the articular cartilage.