During ______, your diaphragm moves down, your external intercostals contract and you make the space in the lungs bigger. This decreases intrapulmonary pressure and causes air to move into the lungs.
Fill in the blank(s) with the appropriate word(s).
Ans: inspiration
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When is a conceptus considered to be an embryo?
A. When the egg is fertilized by the sperm B. When the trophoblast and embryoblast have differentiated from each other C. As soon as the first traces of all the organ systems are present D. After the conceptus has implanted in the uterine wall E. When the three primary germ layers have formed
When potassium channels open and the ions diffuse through the membrane,
A) the inside of the membrane will become more positive. B) the inside of the membrane will become more negative. C) there will be almost no effect on transmembrane potential. D) the membrane will become depolarized. E) the membrane will depolarize to threshold.
Calcium, chloride, and potassium are all examples of ________ minerals.
A. trace B. major C. nonessential D. fat-soluble
The process of bones increasing in width is known as ________.
appositional growth concentric growth epiphyseal plate closure closing of the epiphyseal plate