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Ridges may form when two land masses push together from plate tectonics, earthquake upheaval, volcanic action, or similar geological events. Some ridges are the results of weathering or erosion, where harder rock remains after the surrounding softer terrain has washed away.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoRidges are formed when hot magma rises from the the gap between two plates and hardens to new ocean floor (basalt). The hardened magma is a ridge.
Wiki User
∙ 14y agoEpidermal ridges are downward projections of the epidermis into the dermis between the dermal papillae. They also increase the friction and the surface area of the dermis.
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What is the site of the dermal ridges that produce epidermal ridges on the epidermal surfaces of the fingers called?
fingerprints
What is responsible for the dermal ridges that produce whorled ridges on the epidermal surfaces?
Dermis
What are fingerprints a result of?
dermal papillae that create epidermal ridges
When do fingerprints form?
Fingerprint ridges are formed during the third to fourth month of fetal development.
What holds the epidermal cells together?
dermal papillae, are small, nipple-like protrusions of the dermis that reach into the epidermis, bringing food and oxygen to the lower layers of epidermal cells. In addition, a papilla nourishes every hair follicle. Rows of papillae protruding from the dermis into the epidermis form ridges that create patterns on the skin of the hands, feet, and body. These papillary ridges on the fingertips are responsible for fingerprints. These ridges develop sometime before birth. Not only is the pattern unique for each individual, but also it never changes except to grow larger.
What is the site of the dermal ridges that produce epidermal ridges on the epidermal surfaces of the fingers called?
fingerprints
Do identical twins have the same pattern of epidermal ridges?
Oddly, no . . . in fact they can have quite different epidermal ridges.
What is responsible for the dermal ridges that produce whorled ridges on the epidermal surfaces?
Dermis
What are fingerprints a result of?
dermal papillae that create epidermal ridges
Which structures of the dermis give rise to friction edges or fingerprints?
Dermal ridges cause the overlying epidermis to form epidermal ridges. Collectively these ridges are called friction ridges.
Are fingerprints left on things we touch are associated with epidermal ridges?
Dermal papillae
What are epidermal ridges and dermal papillae?
Epidermal Ridges: the ridges of the epidermis found in the palms and soles, where the sweat pores open; form in fetus as epidermis conforms to the dermal papillae aka fingerprints Dermal Papillae: finger like projections in the papillary region of the dermis where the epidermis conforms for fingerprints
What structure of skin helps you grip a wet glass?
Epidermal Ridges
Ocean ridges are formed by what boundaries?
Divergent boundaries form ocean ridges.
Are Skin surface markings that reflect points of tight dermal attachment to underlying tissues are called epidermal ridges?
flexure lines
What are mid ocean ridges formed from?
the wind ;)
What are ocean ridges formed by?
Divergent boundaries
