What is the effect of sympathetic innervation to the lungs?
A. Increased activity of the mucociliary elevator
B. Dilation of bronchioles
C. Contraction of smooth muscle in the bronchioles
D. Constriction of bronchioles
E. Increased diameter of the bronchi
Answer: B
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Progesterone calms the myometrium and prevents contraction. What factor does not antagonize progesterone and trigger labor and delivery?
A) rising estrogen levels increase sensitivity B) rising oxytocin levels lead to uterine contractions C) distortion of the myometrium D) distortion of the cervix E) relaxation of the cervix
The respiratory system contains a total of five ________.
A. choanae B. tracheal cartilages C. segmental bronchi D. lobes E. laryngeal cartilages
What is the most significant solute in determining the distribution of water among fluid compartments?
A. Pi B. Ca2+ C. K+ D. Cl- E. Na+
Meiosis I is a reduction division
Indicate whether the statement is true or false.