The left lymphatic duct drains lymph from the ______.
a. left arm, left chest, and left side of head.
b. upper part of the body.
c. right arm, right chest, and right side of head.
d. abdomen.
e. right side of the body.
Answer: a. left arm, left chest, and left side of head.
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Which of the following is true concerning environmental influence on genetic expression?
A) The only time a gene can be influenced by environmental factors is in the second trimester of pregnancy. B) Drugs and nutrition can alter normal gene expression. C) It is impossible to alter in any way the expression of a gene in humans. D) Environmental factors determine the way in which 90 percent of our genes are expressed.
What is the middle layer of a blood vessel called?
A. Tunica interna B. Tunica externa C. Tunica adventitia D. Tunica media E. Tunica intima
If a circular object seen in your low-power field (diameter 1 mm) occupies about 1/4 of the diameter of the field, the object's diameter is about ________
A) 0.25 ?m B) 25 ?m C) 2.5 ?m D) 250 ?m
You taste a sauce with the "tip of your tongue". These taste sensations would be carried via the _____ cranial nerve
A. facial (VII) B. vagus (X) C. trigeminal (V) D. glossopharyngeal (IX) E. hypoglossal (XII)