Conduction of an action potential in a myelinated axon is called ________.
A. point to point conduction
B. cable conduction
C. refractory conduction
D. saltatory conduction
Answer: D
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Myelinated axons conduct impulses much faster because
a. the myelin insulates the axon b. ion channels only have to open at the nodes c. voltage is not lost along myelinated areas d. saltatory conduction occurs e. all of the above are true
Irregular blood-filled spaces called _________ in the liver, bone marrow, and spleen allow for the exchange of large molecules.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. The endocrine and nervous systems perform the same general function. 2. Exocrine glands can also release hormones. 3. Endocrine glands secrete hormones. 4. Hormones are carried to their target organs by ducts. 5. ADH would have no effect on liver cells.
Bronchi contain respiratory epithelium, while bronchioles have ______ epithelium, and alveoli have _____ ______ epithelium.
Fill in the blank(s) with the appropriate word(s).