The organ system that regulates and integrates body functions via hormones
A) Muscular
G) Respiratory
B) Reproductive
H) Skeletal
C) Digestive
I) Nervous
D) Cardiovascular
J) Endocrine
E) Integumentary
K) Lymphatic
F) Urinary
J) Endocrine
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A molecule of water in the middle of a chunk of ice will usually have ____ hydrogen bonds with other
water molecules.
a. 3 b. 3.4 c. 6 d. 4 e. 2
What features of the respiratory system protect it from infection?
A. Nasal hairs B. Macrophages C. Mucus D. Cilia E. All of the choices are correct.
ulcer's occur in large intestine and rectum
What will be an ideal response?
Which of the following combinations correctly matches a phylum to its description?
A) Echinodermata — bilateral symmetry as a larva, water vascular system B) Nematoda — segmented worms, closed circulatory system C) Cnidaria — flatworms, gastrovascular cavity, acoelomate D) Platyhelminthes — radial symmetry, polyp and medusa body forms