The cartilaginous rings of the trachea are composed of ____________
A. areolar connective tissue
B. fibrocartilage
C. hyaline cartilage
D. elastic cartilage
E. bone
Ans: C. hyaline cartilage
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Nerve impulse transmissions occurring along myelinated neurons are called ________
A) saltatory conduction B) repolarization C) graded potential D) sodium-potassium pump E) all-or-none response
The number of particles of a solute in a solution is described by its ________. The ability of a solution to affect the fluid volume in a cell is referred to as its ________.
A. tonicity; diffusion B. osmolarity; diffusion C. osmolarity; molarity D. tonicity; osmolarity E. osmolarity; tonicity
Which of the following is not a characteristic of the parasympathetic division of the ANS?
A. Its effects are local. B. It originates in the craniosacral regions of the CNS. C. It has short preganglionic fibers. D. The terminal ganglia are very close to or within their target organs. E. It has short postganglionic fibers.
When the myosin head flexes into a bend, pulling the actin filament along with it, this is called the
A. power stroke. B. muscle tone. C. action reaction. D. action potential. E. recovery stroke.