Which of the following account for why the number of bones in the adult skeleton may vary. Select all that apply.
__X__ There is a variable presence of sesamoid bones.
_____ Some bones may disappear in response to mechanical stress.
__X__ There is a variable number of sutural bones.
_____ There are fontanels in the skull of an infant.
__X__ There is a variable presence of sesamoid bones.
__X__ There is a variable number of sutural bones.
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A slowly progressive disorder affecting muscle movement and balance, this condition is characterized by stiff posture, tremors, and reduced spontaneity of facial expressions.
A. Amyotrophic lateral sclerosis B. Multiple sclerosis C. Parkinson disease D. Guillain-Barré syndrome E. None of the choices is correct.
In most animals, the genotype of the organisms determines their sex. What is the relationship between sex determination and the environment?
What will be an ideal response?
Which of the following secrete amylase?
A. Pancreas and liver B. Pancreas and duodenum C. Pancreas and salivary glands D. Stomach and duodenum E. Stomach and liver
Which objective lens should be used to examine the entire wall of an organ from the exterior to the lumen?
A) Scanning objective B) Low power C) High power D) Oil-immersion