Which is true about the growth of long bones?
A. Osteoblasts dissolve bone tissue when bones remodel in response to sex hormones.
B. Osteoclasts are responsible for depositing new bone tissue at the epiphyseal growth plate before puberty.
C. Before adolescence, bones are completely made up of cartilage; after puberty they ossify and harden.
D. Growth in length occurs at a single epiphyseal growth plate in the center of the shaft of long bones.
E. Growth in length occurs at two epiphyseal growth plates near the ends of long bones.
E
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The most anterior chamber of the heart is the
A. right atrium. B. right ventricle. C. left atrium. D. left ventricle.
Which is not considered to be a change associated with aging in males?
A. Erectile dysfunction B. Impotence C. Decreased testosterone levels D. Prostate enlargement E. Termination of spermatogenesis
The main function of cristae is to
A) supply enzymes for reactions. B) facilitate diffusion of substances into the mitochondria. C) increase the surface area for chemical reactions. D) increase chemical transport in mitochondria.
Which of the following does not stimulate aldosterone secretion?
A. Hyponatremia B. High blood sodium concentration C. High blood potassium concentration D. Hypotension E. Hyperkalemia