What Is the Source of Variability in the Response of Smooth

question 121

Multiple Choice

What is the source of variability in the response of smooth muscle cells from different organs to autonomic nervous activity (some relax to sympathetic nervous output while others contract) ?

• A)the amount of neurotransmitter released into the synaptic cleft
• B)the presynaptic modulation of the autonomic neurons
• C)the duration of neurotransmitter release from the autonomic neurons
• D)the neurotransmitter released by the autonomic nervous system
• E)the type of receptor present on the effector organ

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Definitions:

Maxillary

Pertaining to the jaw or jawbone, specifically the upper jaw represented by the maxilla bone.

Nasal Conchae

Scroll-like, bony structures located within the nasal cavity that help to increase the surface area for air filtration, humidification, and temperature control.

Ethmoid

A spongy, cuboid-shaped bone at the base of the skull, critical in the formation of the nasal cavity, orbits, and the floor of the anterior cranial fossa.

Sphenoid

A complex bone at the base of the skull that helps form the eye socket, nose, and base of the brain casing.