After a severe burn, new skin may grow outwards from the hair follicles. New growth
begins here because
A) a person has many hair follicles.
B) a hair follicle contains stem cells in the bulb region.
C) the hair follicles are located in the subcutaneous layer.
D) the hair follicles are very resistant to fire and heat.
B
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In addition to storage of white blood cells, the lymphatic system is also responsible for ________
A) Making fluids to support the cardiovascular system B) Producing pathogens to fight infections C) Maturation of some types of red blood cells D) Production of some types of white blood cells
Special lymphatic vessels, called lacteals, absorb dietary __________ that are not absorbed by the blood capillaries.
A. water B. glucose C. vitamins D. amino acids E. lipids
Neurotransmitter is being released at a synapse. Which of the following occurs last?
A. Calcium ions enter the presynaptic terminal. B. Synaptic vesicles release neurotransmitter by exocytosis. C. An action potential is produced in the postsynaptic membrane. D. Neurotransmitter flows rapidly across the synaptic cleft. E. Neurotransmitter binds with the receptor on the postsynaptic membrane.
Homeostasis is the
A. tendency of the body to maintain a stable internal environment. B. ingestion of more food than you need to eat. C. decrease in room temperature because a window is open. D. inability to keep body weight within normal limits.