The ligament that helps to maintain the alignment of the condyles between the femur and tibia and to limit the anterior movement of the tibia on the femur is the
a. tibial collateral ligament.
b. posterior cruciate ligament.
c. anterior cruciate ligament.
d. fibular collateral ligament.
c. anterior cruciate ligament.
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Antibody-mediated responses are most effective when the B cell and pathogen are in the same tissue and have physical contact with each other.
Answer the following statement true (T) or false (F)
Which of the following is true concerning environmental influence on genetic expression?
A) The only time a gene can be influenced by environmental factors is in the second trimester of pregnancy. B) Drugs and nutrition can alter normal gene expression. C) It is impossible to alter in any way the expression of a gene in humans. D) Environmental factors determine the way in which 90 percent of our genes are expressed.
Near the elbow, the brachial artery branches and gives rise to which of the following?
A. The radial and ulnar arteries B. The deep brachial and radial collateral arteries C. The radial and superior ulnar collateral arteries D. The radial and anterior interosseous arteries E. The ulnar artery and the superior ulnar collateral artery
Which of the following statements is NOT correct regarding the motor units and their activation?
A) A motor unit in muscles of gross movement can have thousands of muscle cells. B) The metabolic capacity of muscle fibers within a motor unit can be altered. C) At its peak intensity, a contractile stimulus will activate muscle fibers that are easily fatigued. D) A weak contractile stimulus activates fast-twitch motor units. E) All muscle fibers in a single motor unit are of the same fiber type.