Which muscle is located primarily in the posterior antebrachial region?
A) Flexor carpi radialis
B) Extensor carpi ulnaris
C) Palmaris longus
D) Pronator teres
Answer: B
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A group of rats are bred in a laboratory to study muscle function. This group possesses a genetic defect that causes the myosin heads to bind ADP irreversibly. The rats are entirely paralyzed. Which of the following correctly explains the impact of the defect on the muscle?
A. Because ADP is permanently bound, the myosin heads can never bind to the actin binding sites of the thin filament. B. ATP won't bind to the myosin heads, preventing the actin binding site of the thick filament from being revealed. C. ATP won't bind to the myosin heads, causing the thin filament to be constantly pulled in the power stroke of contraction. D. Because ADP is permanently bound, the myosin heads will be irreversibly cross-bridged with the actin binding sites of the thin filament.
The penis consists almost entirely of __________made up of three columns or cords of sponge-like vascular spaces extending the length of the organ
Fill in the blank(s) with correct word
Amelogen is a protein that is very abundant in:
a. Cementum b. Dentin c. Enamel d. The periodontal ligament e. The pulp cavity of a tooth
Foot pronation occurs at which joint?
A. ankle B. subtalar C. both A & B D. pronation does not occur in the foot