By binding to the Ca2+ channel proteins, drugs known as calcium channel blockers have two main effects. Name them. Why are some cells unaffected by these drugs?
What will be an ideal response?
Binding to calcium channels makes them less likely to open, effectively blocking the normal inward calcium current that would result from neural or endocrine stimulation. This causes vasodilation and a decrease in heart rate. Insensitive tissues have a different subtype of calcium channel.
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What is the group of structures in the brain that is involved with emotions and memory?
A. reticular formation B. limbic system C. basal nuclei
Normal activities usually involve _____ movements.
A. abduction and extension B. flexion and pronation C. single D. combination
The male urethra is longer than the female one.
Answer the following statement true (T) or false (F)
The type of nervous tissue that protects and supports the nerve is called “nerve glue” or _____