You notice that your father holds his book farther from his face than he used to. Since you are taking an anatomy and physiology course, you realize that this is due to
A) his photoreceptors having become less sensitive to light.
B) his cataracts.
C) a tumor on his optic nerve.
D) a lack of vitreous humor in his eyeball's posterior cavity.
E) his lens being unable to accommodate for close objects.
E) his lens being unable to accommodate for close objects.
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Lipoproteins that contain large amounts of cholesterol for transport to peripheral tissues are called ________.
Fill in the blank(s) with the appropriate word(s).
Isotopes of an element differ in the number of
A) protons in the nucleus. B) electrons in the nucleus. C) neutrons in the nucleus. D) electron clouds. E) electrons in energy shells.
This figure shows a medial view of the right eye. What muscle does number 2 indicate?
A. Superior oblique B. Lateral rectus C. Inferior oblique D. Medial rectus E. Superior rectus
What are the two factors that are regulated to maintain fluid balance in the body?
a. salt concentration and blood pressure b. body temperature and blood pressure c. ECF pH and ICF pressure d. ICF volume and ICF osmolarity e. ECF volume and ECF osmolarity