Neurons can produce and release different neurotransmitters. It is hypothesized that the type of neurotransmitter released is determined by
A) The amplitude of the action potential.
B) The frequency of the action potential.
C) The neurotransmitter that is available.
D) Random chance.
Answer: B
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Which of the following produces a lipid-rich secretion that prevents the upper and lower eyelids from sticking together at their edges?
A) palpebra B) lacrimal caruncle C) chalazion D) tarsal gland E) conjunctiva
The four major types of glial cells in the CNS are ____________________, ____________________, ____________________, and ____________________
Fill in the blank(s) with correct word
The spleen is essentially a giant lymph node, because it is encapsulated, has trabeculae, and filters lymph to remove antigens.
Answer the following statement true (T) or false (F)
In a sarcomere, thin myofilaments are anchored to a ________ disc.
Fill in the blank(s) with the appropriate word(s).