Explain the role of aldosterone in sodium and water balance.
What will be an ideal response?
Aldosterone targets the distal tubule and collecting duct and enhances sodium ion reabsorption so that very little leaves the body in urine. Aldosterone also causes increased water reabsorption because, as sodium is reabsorbed, water follows it back into the blood.
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Describe the structural characteristics of the epidermis that contribute to its ability to protect the surface of an animal
What will be an ideal response?
Which statement is incorrect?
a. Afferent fibers enter the spinal cord through the ventral root. b. The dorsal and ventral roots at each level of the spinal cord join to form a spinal nerve. c. The spinal cord is not as long as the vertebral column. d. The ventral horn contains cell bodies of motor neurons that supply skeletal muscles. e. The white matter of the spinal cord is organized into ascending and descending tracts.
Which neuron cytoplasmic inclusion is the product of organelle digestion by lysosomes?
A. Neurofibrin B. Glycogen granules C. Acetylcholine D. Lipofuscin E. Myelin
The junction of a neuron with another cell is a/an ________.
A. effector B. receptor C. ganglion D. synapse