List the structures associated with the brain stem and indicate their primary function.
What will be an ideal response?
1. midbrain: acts as a relay station for the tracts passing between the cerebrum and the spinal cord
2. pons: contains a bundle of axons that travel between the cerebellum and the rest of the CNS
3. medulla oblongata: contains a number of reflex centers for regulating heartbeat, breathing, and vasoconstriction
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The most likely mode of transmission of the common cold is by hand-to-hand contact between a rhinovirus donor and a susceptible recipient.
Answer the following statement true (T) or false (F)
Synapsis occurs during
A) prophase I. B) metaphase I. C) anaphase I. D) telophase I.
Freshwater fishes excrete most of their nitrogenous wastes through the kidneys. Indicate whether the statement is true or false
A protist that contains contractile vacuoles most likely lives ________
A) in a marine environment B) within the cells of another organism C) in fresh water D) in ice