A spinal nerve passing through the intervertebral foramen is
A. composed of afferent fibers only.
B. associated with the vertebra above.
C. composed of efferent fibers only.
D. associated with cranial nerve C1.
Answer: B
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Which of the following statements is inaccurate with respect to sonic muscles?
A) Rattlesnakes, cicadas, and toadfish are examples of animals with sonic muscles. B) Animals can modify their muscles to operate some 10 times faster than the fastest locomotor muscles in that animal. C) The fast speed can be attributed to some muscles being able to lengthen sarcomeres. D) Sonic muscles must have fast Ca2+ transport.
Answer the following statements true (T) or false (F)
1. Sensory neurons are also called efferent neurons. 2. One of the most common types of brain tumors develops from glia cells. 3. Astrocytes produce myelin for the cells of the central nervous system. 4. Microglia help protect the brain by eating microbes that may enter the brain. 5. Oligodendrocytes are important in the formation of the blood brain barrier.
Match each product with the cell or region that secretes or contains it.
1. parietal cells 2. goblet cells 3. brush border 4. pancreatic cells A. enzymes B. HCl C. HCO 3- D. mucus E. more than one of these
Where should the first incision be made when dissecting a cat?
A) on the lateral side of the ventral surface near the neck B) on the midline of the ventral surface just anterior to the tail C) on the lateral side of the dorsal surface near the neck D) on the midline of the dorsal surface just anterior to the tail