The respiratory control areas are in the
A) pons and medulla oblongata. B) hypothalamus and hippocampus.
C) alveoli. D) cerebral cortex.
A
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What do anabolic steroids do when taken as medication?
A) Destroy tissue B) Increase fertility C) Fight infection D) Build up tissue
Release of energy from many biological molecules requires oxygen, and yet some species are able to survive in conditions having little or no oxygen (hypoxia or anoxia). What adaptations allow them to do this?
What will be an ideal response?
A condition that is within a well-defined area is called ________
Fill in the blank(s) with correct word
The lymphatic system differs from the cardiovascular system in that
A. the lymphatic vessels have their own "pump" to assist flow. B. the lymphatic system only carries fluid away from tissues. C. lymph circulates fluids and cardiovascular does not. D. lymph capillaries allow free movement of fluid in and out of the capillaries. E. lymph capillaries do not contain any fluid.