Identify one reason it is hard to breathe during an asthma attack:
A. air flow is increased for a given pressure
B. air flow requires less pressure than usual
C. airway diameter is increased
D. the airways are constricted
E. tissues surrounding the airways provide less support
Answer: D. the airways are constricted
You might also like to view...
Which statement regarding vasopressin in incorrect?
a. it is produced in the hypothalamus. b. it stimulates uterine smooth muscle contraction. c. it increases kidney reabsorption of water. d. it is a potent arteriolar vasoconstrictor. e. it is released when the osmolarity of the plasma increases.
If a stimulus to a neuron is great enough, ________ is reached and an action potential is generated
A) resting membrane potential B) threshold C) repolarization D) depolarization
How can a tooth be moved in a bony socket during orthodontic treatment?
What will be an ideal response?
An important function of the placenta is to serve as an anatomical barrier against maternal immune cells
Indicate whether the statement is true or false