Describe how fingerprints are formed and what they are used for
What will be an ideal response?
Epidermal ridges develop during the third or fourth fetal month as the epidermis conforms to the contours of the underlying dermal papillae of the papillary region. The ridges increase the surface area of the epidermis and thus increase the grip of the hand or foot by increasing friction. Because the ducts of sweat glands open on the tops of the epidermal ridges as sweat pores, the sweat and ridges form fingerprints upon touching a smooth object. The epidermal ridge pattern is genetically determined and is unique for each individual allowing these patterns to be used to identify individuals.
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The C1 vertebra forms a pivot joint with the C2 vertebra through a projection called the
A) transverse process. B) pedicle. C) dens. D) spinous process. E) superior articular process.
________ are specialized in generating and transmitting nerve impulses.
A. Neurons B. Neuroglia C. Dendrites D. Gliomas
Sensory information is invested with emotional significance in association areas in the frontal lobes and limbic system
Indicate whether the statement is true or false.
Which of the following is an epidermal cell with an immunological function?
A. Keratinocyte B. Plasma cell C. Melanocyte D. Dendritic (Langerhans) cell E. Tactile (Merkel) cell