What happens to contrast and resolving power when the aperture of the condenser (that is, the size of the hole through which light passes before it reaches the specimen) of a compound light microscope is decreased?
What will be an ideal response?
Contrast increases, resolving power (quality of image) decreases.
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A 2-year-old child has experienced a proximal humeral fracture involving the growth plate. This plate is also called the:
A. diaphyseal plate. B. metaphyseal plate. C. epiphyseal plate. D. endosteum plate.
Which artery transports blood from the brachial vein to the subclavian vein?
A. Basilic vein B. Thyrocervical vein C. Axillary vein D. Median cubital vein E. Cephalic vein
Secretion of potassium into the urine is
A) decreased by aldosterone. B) associated with the secretion of sodium from the distal tubules and collecting ducts. C) increased when the exchange pump binds H+. D) increased by aldosterone. E) None of the answers is correct.
Purkinje cells of the central nervous system are located in the:
a. Cerebellar cortex b. Cerebral cortex c. Dorsal horn of the spinal cord d. Dorsal root ganglia e. Ventral horn of the spinal cord