The infraspinatus ________.
A. abducts the arm
B. adducts and laterally rotates the arm
C. laterally rotates the arm
D. medially rotates the arm
E. flexes the shoulder
Answer: C
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The first event in inspiration is
A. lung inflation. B. atmospheric pressure forces air into the respiratory tract. C. the diaphragm moves downward and the external intercostal muscles contract. D. decreased intra-alveolar pressure.
Epidural anesthesia is introduced to the epidural space between the __________ to block pain signals during pregnancy.
A. dural sheath and dura mater B. dural sheath and vertebral bones C. dura mater and arachnoid mater D. arachnoid mater and pia mater E. dura mater and pia mater
An inhaler used to treat airway constriction in asthma or allergy might contain a drug that
A) activates ?1 adrenergic receptors. B) activates ?2 adrenergic receptors. C) blocks muscarinic cholinergic receptors. D) activates ?1 or ?2 adrenergic receptors. E) activates ?2 adrenergic receptors or blocks muscarinic cholinergic receptors.
The technical term for "breathing" is
A) gas exchange. B) pulmonary ventilation. C) internal respiration. D) external respiration. E) alveolar ventilation.