__________ diffusion is a process in which carrier proteins ferry substances down their concentration gradient without the use of cellular energy.
Fill in the blank(s) with the appropriate word(s).
Facilitated
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Adult stem cells may be found in ________.
hair follicles the brain red bone marrow skeletal muscle All of the choices are correct.
The superior border of the ilium that acts as a point of attachment for both ligaments and muscles is the
A) anterior iliac spine. B) acetabulum. C) posterior superior iliac spine. D) iliac crest. E) iliac notch.
Which statement is true regarding neuronal anatomy?
A. Some axons, dendrites, and cell bodies are myelinated. B. All axons, dendrites, and cell bodies are myelinated. C. Some axons are myelinated; all dendrites and cell bodies are unmyelinated. D. All axons and dendrites are myelinated; cell bodies are unmyelinated.
Which pancreatic cells is correctly matched to its secretion?
A. beta cells - digestive enzymes B. acini cells - somatostatin C. alpha cells - glucagon D. delta cells - insulin