What are pluripotent stem cells?
A. Cells found only in adult tissue that replace cells that have died or become damaged.
B. Cells from pre-embryos that can develop into any type of embryonic or adult cell.
C. Very strong cells that can assume the function of any cell type in the body.
D. Cells found only in the bone marrow that can differentiate into any kind of blood cell.
E. Cells that are able to develop only into one mature cell type.
Answer: B
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Kristen went to the dentist complaining of jaw tenderness and popping noises when she opens and closes her mouth. He notices abnormal wearing on the articulating surfaces of her teeth. Which of the following conditions does she most likely suffer from?
A) deviated nasal septum B) cleft palate C) temporomandibular joint syndrome D) dislocated jaw E) sinusitis
Match the type of transport with its description.
1. between adjacent cells 2. from an organ's lumen to the extracellular fluid 3. in one side of a cell and out the other 4. movement from the extracellular fluid into the lumen of an organ A. secretion B. paracellular transport C. transcellular transport D. absorption
Two regions of the hypothalamus that are associated with the posterior pituitary are the
A. primary plexus and pars distalis. B. paraventricular nucleus and supraoptic nucleus. C. supraoptic nucleus and pars distalis. D. primary plexus and paraventricular nucleus. E. pars tuberalis and pars intermedia.
Bones and muscles function as mechanical devices called
A) syncytia. B) levers. C) ladders. D) lifts.