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Unformatted text preview: elease heat), and blood vessels in
skeletal muscles (which are dilated).
Adrenergic Receptors - respond to norepinephrine
Alpha – mostly excitatory
e.g. vasoconstricts blood vessels, constricts GI
sphincters, dilates pupils of eyes.
Beta – mostly inhibitory (except on heart where they
increase rate and force)
e.g. vasodilation in heart and lungs, bronchial
dilation, inhibition of muscles in GI tract.
Found at most sympathetic target organs.
Adrenergic receptors come in two basic types and each has subtypes.
These are found at sympathetic target organs. Alpha receptors are mostly
excitatory. They cause vasoconstriction of most blood vessels to raise the
blood pressure, dilation of the pupils of the eyes, constriction of sphincters in
the GI tract as part of its reduced function with sympathetic stimulation.
Beta receptors are generally inhibitory, except those to the heart. Beta
receptors on the heart increase heart rate and force. But others dilate blood
vessels to the heart and lungs, and dilate the bronchi. It is this effect used in
anti-bronchitis drugs which are sympathomimetic. Beta receptors inhibit the
muscles and glands of the GI tract.
Which cranial nerve(s) mediate taste?
Answer A,D 5
Which cranial nerve(s) are part of cardiac control?
Which cranial nerve(s) produce salivation?
Which is not a parasympathetic nerve?
Which is not a parasympathetic function?
A)Slow heart rate
B)Normal motility of GI tract
C)Forceful contraction of GI sphincters
D)Constriction of the pupil
Copious secretion of sweat in thermoregulation is:
The receptors on eccrine sweat glands are:
Vasodilation of blood vessels leading to the
skeletal muscles, heart, lungs, and skin is:
All of the previous functions except vasodilation to
the skeletal muscles are:
Which junction produces a semipermeable
C)Hemidesmosomes D)Gap junctions
Which tissue principally lines the respiratory tract?
A)Simple squamous epithelium
B)Simple cuboidal epithelium
C)Simple columnar epithelium
D)Pseudostratified ciliated columnar epithelium
E)Stratified squamous epithelium
Which tissue(s) are found in the dermis?
B)Dense regular ct
C)Dense irregular ct
Which tissue is found in the epiglottis?
D)Fibrous connective tissue
Endochondal ossification begins with:
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This note was uploaded on 01/29/2013 for the course BIOL 239 taught by Professor Swan during the Fall '12 term at New Mexico.
- Fall '12