Choose the correct statement.
During quiet breathing, expiration does not usually involve the contraction of muscles.
Expiration occurs when the diaphragm and the rib muscles contract.
Expiration occurs as the chest (thoracic) cavity enlarges.
The larynx acts like a suction pump to pull air into the lungs.
During quiet breathing, expiration does not usually involve the contraction of muscles.
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Homeostasis is maintained by the
A) Hypothalamus. B) Cerebral cortex. C) Hippocampus. D) Limbic system.
_______ (Contraction or Relaxation?) of the diaphragm ______ (increases or decreases?) the volume of the thoracic cavity, which, in turn causes intra-alveolar pressure to increase
Fill in the blank(s) with correct word
The ________ is formed by the allantois, blood vessels, and yolk sac
A) umbilical cord B) chorion C) chorioallantoic membrane D) trophoblast E) amnion
Which of the following is not an example of an exteroceptor?
A) touch B) pressure C) pain D) temperature E) baroreceptor