The Lungs Are Contained Within the Thorax in the ____________

Q12: Intercostal arteries and veins provide circulation for

Q13: Spasm of smooth muscle in the bronchial

Q14: The mitral valve is the _ valve.<br>A)

Q15: The primary function of the cardiac sphincter

Q16: A condition in which air is present

Q18: Which is the correct description of a

Q19: The _ valve prevents blood from exiting

Q20: The vein that drains the upper limbs,

Q21: The primary function of the cricopharyngeus muscle

Q22: A stethoscope placed at the left lower