Compared to blood capillaries, lymph capillaries exhibit all of the following except that they
A) have no basement membrane.
B) have only a tunica interna.
C) have walls of endothelial cells that overlap like shingles.
D) are smaller in diameter.
E) are frequently irregular in shape.
D
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The contractile units of skeletal muscles are ________
A) microtubules B) myofibrils C) mitochondria D) T tubules
The release of hormones from the adrenal medulla is stimulated by
A. the sympathetic division of the autonomic nervous system. B. adrenocorticotropic hormone. C. thyrotropic hormone. D. growth hormone. E. follicle-stimulating hormone.
The thirst mechanism is usually not triggered until the volume of the body water has
been decreased by 5-10%. Indicate whether the statement is true or false
The white blood cells stain ______________ and the red blood cells stain ______________________
Fill in the blank(s) with correct word