________ is/are formed partly from the secretions of glands in the external ear canal.
A. Sweat
B. Scents
C. Cerumen
D. Mucus
E. Sebum
Answer: C
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Which of the following is a medical disorder in which the myelin in the CNS has been destroyed?
A. Multiple sclerosis B. Meningitis C. Guillain-Barré syndrome D. Myasthenia gravis
There are a variety of ways that animals have adapted to cope with life in desert environments. Describe five adaptations, giving examples if appropriate, that animals might use to cope with high heat and low water availability
What will be an ideal response?
Structure D is the
A) sella turcica.
B) styloid process.
C) mastoid process.
D) external auditory meatus.
E) coronoid process
In most vessels, epinephrine and norepinephrine cause ______ but in skeletal and cardiac muscle, these hormones cause ____________.
A. vasoconstriction; vasodilatation B. vasodilatation; vasoconstriction C. increases to blood flow; decreases to blood flow D. increases in oxygen concentration; decreases in oxygen concentration E. both C and B