The primary function of the respiratory system is the
A) production of red blood cells.
B) transmission of nervous impulses.
C) destruction of toxic metabolic by-products.
D) exchange of oxygen and carbon dioxide.
Correct Answer:
Verified
Q5: Devon has a rare condition characterized by
Q6: The brain and spinal cord are structures
Q7: The process of digesting food begins in
Q7: A (An)_ is a body structure composed
Q9: Chewing food is an example of
A)anabolic metabolism.
B)active
Q11: Four-year-old Eva was born with a rare
Q12: The accessory organ of the digestive system
Q13: The stomach
A)churns food,mixing it with gastric juice.
B)absorbs
Q15: _ is the sum of all chemical
Q51: The _ is an accessory organ of
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