Which of the following sutures is found in the infant but sometimes has no evident marking in the adult?
A) frontal
B) squamous
C) coronal
D) sagittal
E) lambdoid
A) frontal
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The hormone __________________ causes increased reabsorption of sodium (and the water that follows) and secretion of potassium from the later segments of the renal tubule.
Fill in the blank(s) with the appropriate word(s).
These figures show the coxal joint. Which number indicates the pubofemoral ligament?
A. 1 B. 2 C. 3 D. 4 E. 5
Curare is a poisonous plant extract. Curare molecules have a chemical structure like the neurotransmitter ACh. Curare can bind to the ACh receptor site on the chemically gated ion channels in the motor end plate
Even though curare will bind to the receptor site it will not open the ion channel and no ions will pass through. What do you think the symptoms of curare poisoning would look like? A) Curare will only affect muscles with ACh receptors, paralyzing them. B) Smooth muscles will become stimulated causing quick movement of nutrients through the digestive system. C) Curare will only affect cardiac muscle, causing fibrillations of the heart. D) Muscles will respond too quickly and cause a severe tremor.
Blocking the antigen receptors on the surface of lymphocytes would interfere with
A) phagocytosis of the antigen. B) the ability of the lymphocyte to present the antigen. C) antigen recognition. D) the lymphocyte's ability to produce antibody. E) None of the answers are correct.