In a condition called incontinentia pigmenti, the skin has deep dark splotches, due to
melanin that seeps down into the dermis. Normally, melanin is confined to the
A) papillae. B) epidermis.
C) basement membrane. D) hair.
B
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________ results from the activities of the nervous or endocrine system
A) Self-regulation B) Automatic regulation C) Intrinsic regulation D) Extrinsic regulation E) Autoregulation
The potential across a cell membrane has changed drastically, from -90mV to +30mV. In other words,
A. there is a positive charge on the inside of the cell, relative to the outside. B. there is a negative charge on the inside of the cell, relative to the outside. C. the resting membrane potential has been established. D. there is no relative charge difference between the inside and the outside of the cell.
Which nutrient is essential for adequate hemoglobin production?
A. Iodine B. Magnesium C. Vitamin B D. Vitamin E E. Iron
Air flow in the respiratory system is driven by _____ gradients.
Fill in the blank(s) with the appropriate word(s).