Motor-neuron axon terminals release ____________________, which brings about excitation and contraction of the innervated muscle cells
Fill in the blank(s) with correct word
ACh (acetylcholine)
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The pinkish hue of individuals with fair skin is the result of the crimson color of oxygenated hemoglobin (contained in red blood cells) circulating in the dermal capillaries and reflecting through the epidermis
Indicate whether the statement is true or false
Endocrine specificity is a result of ____
a. anatomic proximity b. anatomic specialization c. proximity and specialization of hormones d. receptor proximity e. receptor specialization
The subunits of ribosomes are exported outside the nucleus into the cytoplasm, where they are assembled into their finished product.
Answer the following statement true (T) or false (F)
Absorption of stray light rays (not absorbed by photoreceptors) occurs in the
A. cornea. B. choroid. C. conjunctiva. D. sclera.