Typically, an adult's body contains ________ of blood.
A. 1 liter
B. 15 liters
C. 10 liters
D. 5 liters
Answer: D
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If a pair of electrons is unequally shared between two atoms, a(n) ________ bond occurs
A) single covalent B) double covalent C) triple covalent D) polar covalent E) hydrogen
The ability of sperm cells to move along the ductus deferens is due to ________
A) hormonal action B) gravity C) enzymatic activity D) peristaltic contractions
Alexander is a 15-year-old boy with extensive acne on his nose, forehead, and cheeks. He reached puberty at age 14, at which point his acne became more abundant in these areas. What is the anatomic basis for his acne?
a. His merocrine sweat glands have begun producing abundant amounts of sweat. b. His sebaceous gland ducts have become blocked. c. His sebaceous glands are not producing enough sebum to lubricate his skin. d. His apocrine sweat glands are producing a secretion that has a marked odor.
Which is not correct about the left lung?
A. It has a cardiac notch. B. It has 2 lobes and 1 fissure. C. It has an esophageal depression. D. It has a cardiac impression. E. It is slightly smaller than the right lung.