The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?
A) to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally
B) to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction
C) to extend and medially rotate the humerus and to act as a synergist of the latissimus dorsi
D) to flex and adduct the humerus and to act as a synergist of the pectoralis major
B) to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction
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Which of the following is mismatched?
A. Ankle - calcaneofibular ligament B. Knee joint - patellar ligaments C. Shoulder joint - coracohumeral ligament D. Hip joint - cruciate ligaments E. Elbow joint - radial collateral ligaments
The rectus abdominis is classified as a convergent muscle.
Answer the following statement true (T) or false (F)
What is the importance of reciprocal innervation in muscular reflexes?
A. It prevents simultaneous activity of antagonistic muscle groups that would impede limb movement. B. It ensures that limbs on the contralateral side of the body perform the same movements as those on the ipsilateral side. C. It maintains signaling along afferent neurons from stretch receptors, even when a muscle shortens rapidly. D. It prevents excessive force on a muscle from resulting in tearing of fibers, or damage to the tendon. E. It recruits synergistic muscles to come to the aid of a muscle that help it generate force and limb motion.
The term 'menstrual cycle' describes events in the
A. uterus. B. uterine tubes. C. ovaries. D. vagina.