The tracheal cartilages are classified as ____ cartilage.
a) hyaline
b) elastic
c) fibro
Ans: a) hyaline
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A graded potential is one that
A. is all or none (always the same intensity). B. travels the length of the nerve fiber (is long-distance). C. varies in size depending on the magnitude of the stimulus (larger voltage change for stronger stimulus). D. lasts for several seconds after ion channels have opened, closed, and reset.
What is a common protozoan parasite of poultry and wild birds? ______________________________
Fill in the blank(s) with correct word
Which is the most common structural type of synapse?
A. Axoaxonic B. Axonucleic C. Dendrodendritic D. Axosomatic E. Axodendritic
Which of the following does not characterize the sympathetic nervous system?
a. It promotes responses that prepare the body for strenuous physical activity. b. It is part of the autonomic nervous system. c. It has norepinephrine as its postganglionic neurotransmitter. d. It is always excitatory (that is, it increases the activity in every tissue it innervates). e. It is part of the efferent division of the peripheral nervous system.