A/an __________ is an entrance or outlet from a body cavity
Fill in the blank(s) with correct word
orifice
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Lymphocytes are the only granulocytes that make gamma globulins
Indicate whether the statement is true or false
Which of the following is required as a cofactor for hemoglobin synthesis?
A) manganese B) phosphorus C) zinc D) copper E) None of the answers is correct.
In smooth muscle, actin and myosin filaments:
A. are organized into sarcomeres and aligned to yield a striated appearance B. overlap, with the actin filaments anchored at dense bodies C. overlap, and contain a tropomyosin-troponin complex on the actin filament D. require phosphorylation of the myosin heavy chain to initiate muscle contraction E. typically generate contractile force in the absence of cytosolic Ca++
Bitter and sour tastes are generally associated with
A) Carbohydrates. B) Proteins. C) Ions. D) Toxic substances.