A crest on a bone is defined as a(n)
A) low ridge.
B) small, rounded projection.
C) narrow groove.
D) elongated cleft.
E) prominent ridge.
E) prominent ridge.
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Prominent muscular ridges in the anterior atrial wall and auricles are called
A) pectinate muscles. B) conus arteriosus. C) papillary muscles. D) trabeculae carneae. E) fossa ovalis.
Aldosterone secretion
a. is controlled by the concentration of K+ b. is stimulated by angiotensin II. c. is controlled by the concentration of Cl-. d. both (a) and (b) e. both (b) and (c)
The portion of the hair below the surface of the skin is the ________.
A. shaft B. root C. hair bulb D. cuticle E. medulla
Which action is occurring at the ankle joint when a person stands on tiptoe to reach for something on a high shelf?
A. Plantar flexion B. Opposition C. Eversion D. Abduction E. Dorsiflexion