The change in size of the bone marrow (where blood cells are produced) as an infant matures is an example of ________, whereas the transformation of blood stem cells into white blood cells is an example of ________.
A. development; differentiation
B. growth; differentiation
C. growth; development
D. differentiation; growth
E. differentiation; development
Answer: B
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A pediatric patient presents with recurring bacterial infections. This could be due to a defect in phagocytosis.
Answer the following statement true (T) or false (F)
Due to the structure of the ________, a large amount of moisture is added to the respiratory system every day
A) Conchae B) Nares C) Eustachian tube D) Trachea
Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?
A) mechanically gated channel B) voltage-gated channel C) leakage channel D) ligand-gated channel
A neuron with nicotinic receptors is exposed to acetylcholine. This will not lead to
A) activation of chemically gated ion channels. B) excitation of the neuron. C) entry of sodium ion. D) binding of the nicotine to the channel. E) activation of muscarinic receptors.