Internal respiration is the exchange of gases between the blood and body cells.
a. true
b. false
Answer: a. true
Anatomy & Physiology
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The alveolar cell that secretes pulmonary surfactant is the
A. alveolar type II cell. B. alveolar type I cell. C. alveolar macrophage. D. dust cell. E. squamous alveolar cell.
Anatomy & Physiology
The vessel that returns blood from the abdomen and legs to the heart is the __________ vena cava.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
How many chromosomes do human primary oocytes contain?
a. 48 b. 46 c. 32 d. 24 e. 23
Anatomy & Physiology
Memory B cells do NOT differentiate into plasma cells UNLESS they are __________.
a. stimulated by passive immunization b. exposed to the same antigen a second time c. stimulated by active immunization d. initially subjected to a specific antigen
Anatomy & Physiology