Which of the following leads to an increase in the ratio of LDL cholesterol to HDL cholesterol?
A. Exercise
B. Weight reduction
C. Cigarette smoking
D. Estrogens
E. All of these increase the LDL:HDL ratio.
Answer: C
Anatomy & Physiology
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What is found within the central canal of an osteon?
A. Blood vessels B. Osteoclasts C. Osteocytes D. Primarily hydroxyapatite E. Primarily collagen
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Which of the following is NOT true of the pineal gland?
A. It is located in the brain. B. It produces melatonin. C. It may be what triggers sleep at night. D. It causes the maturation of white blood cells.
Anatomy & Physiology
The submandibular ducts open into the floor of the oral cavity, lateral to the lingual frenulum
Indicate whether this statement is true or false.
Anatomy & Physiology
Which event occurred first in Earth's history?
What will be an ideal response?
Anatomy & Physiology