The medullary cavity of a long bone is lined with
A) periosteum.
B) endosteum.
C) lacunae.
D) lamellae.
E) osteon.
B) endosteum.
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Among the components of the dermis are
a: sweat glands b: hair follicles c: collagen fibers d: sensory nerve endings e: arrector pili muscles A. a, b, d B. a, c, d C. a, b, d, e D. a, b, c, e E. a, b, c, d, e
Circulation is vital because it
A) delivers carbon dioxide to tissues and removes excess oxygen. B) supplies oxygen and nutrients to and removes wastes from tissues. C) inflates the lungs. D) delivers wastes to tissues.
In the temporomandibular joint, a pad of fibrocartilage called the ________ divides the synovial cavity into two separate chambers.
A. mandibular partition B. articular disc C. meniscus D. coronoid capsule E. sphenomandibular ligament
If the amino acid coding region of a mRNA molecule is 1800 nucleotides (bases) in length, this molecule will contain _____ codons
A. 1200 B. 400 C. 900 D. 600 E. 800