Which following types of cells are considered excitable cells because they are able to produce electrical signals?
a) neuroglial cells and myofibers
b) myofibers and connective tissue cells
c) neuroglial cells and neurons
d) neurons and epithelial cells
e) myofibers and neurons
Answer: e
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a) Neutrophil b) Platelet c) Lymphocyte d) Basophil e) Erythrocyte
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Indicate whether the statement is true or false
Which type of lipoprotein transfers cholesterol from the cells in peripheral tissues to the liver for inclusion as part of bile?
A) very-low density lipoproteins (VLDLs) B) low-density lipoproteins (LDLs) C) lipoprotein lipase D) high-density lipoproteins (HDLs)
The thyroid gland secretes all of the following EXCEPT ________.
A. parathyroid hormone B. triiodothyronine C. calcitonin D. thyroxin