The endocrine system uses chemical messengers called _____,which move through the bloodstream.
A) hormones
B) erythrocytes
C) leukocytes
D) thrombocytes
Correct Answer:
Verified
Q8: The three types of muscles that make
Q9: Periosteum:
A)does not contain nerves and blood vessels.
B)is
Q10: The stomach is part of what body
Q11: The tonsils and spleen are parts of
Q12: The cells associated with bone formation are
Q14: The appendicular skeleton:
A)includes the skull.
B)functions to protect
Q15: How many systems does the human body
Q16: The body system that delivers oxygen to
Q17: Lymphocytes fight disease by producing:
A)leukocytes.
B)antibodies.
C)monocytes.
D)macrophages.
Q18: The primary center for regulating and coordinating
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