Arrange these structures as they participate in excitation-contraction
A. T tubules, sarcolemma, calcium ions, sarcoplasmic reticulum
B. calcium ions, T tubules, sarcolemma, sarcoplasmic reticulum
C. sarcolemma, T tubules, sarcoplasmic reticulum, calcium ions
D. sarcoplasmic reticulum, calcium ions, T tubules, sarcolemma
E. sarcolemma, sarcoplasmic reticulum, calcium ions, T tubules
C
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Since they produce ribosome subunits, one would expect to find large numbers of nucleoli in cells that synthesize
A. proteins. B. steroid hormones. C. energy sources. D. pigments.
An extension past the anatomical position is known as
A) double-jointed. B) extension. C) flexion. D) rotation. E) hyperextension.
Which gland is derived from both neural crest cells and mesoderm?
A. Thyroid gland B. Pancreas C. Posterior pituitary D. Anterior pituitary E. Adrenal glands
The use of a male condom is as effective as oral contraceptives for birth control.
a. true b. false