The blast cell for blood production is the
A. hemocytoblast
B. chondroblast
C. fibroblast
D. osteoblast
Answer: A. hemocytoblast
You might also like to view...
The humoral control of hormone release may be triggered which of the following factors?
A) blood level of an ion like calcium B) blood level of a pituitary hormone C) blood level of a hypothalamic hormone D) nervous stimuli E) neurotransmitter activation
If an individual's respiratory rate decreases, then blood CO2 levels
A. rise, blood H+ levels rise, and blood pH rises. B. rise, blood H+ levels rise, and blood pH falls. C. rise, blood H+ levels fall, and blood pH falls. D. fall, blood H+ levels rise, and blood pH rises. E. fall, blood H+ levels fall, and blood pH falls.
Which of the following is a conducting zone structure?
A) respiratory bronchiole B) terminal bronchiole C) alveolar sac D) alveolar duct
There are many arterial loops within the circulatory system, what function does this serve?