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The pseudopodial process (aka the tanning process) happens slowly in dermal melanocytes in response to ultraviolet light and to production of new melanosomes and increased donation of melanosomes to adjacent keratinocytes, which are typical skin surface cells. Donation occurs when some keratinocytes engulf the end of the melanocyte pseudopodia ...
Illustration of a melanocyte Micrograph of melanocytes in the epidermis. Through a process called melanogenesis, melanocytes produce melanin, which is a pigment found in the skin, eyes, hair, nasal cavity, and inner ear. This melanogenesis leads to a long-lasting pigmentation, which is in contrast to the pigmentation that originates from ...
The neural crest is a ridge-like structure that is formed transiently between the epidermal ectoderm and neural plate during vertebrate development. Neural crest cells originate from this structure through the epithelial-mesenchymal transition, and in turn give rise to a diverse cell lineage—including melanocytes, craniofacial cartilage and bone, smooth muscle, dentin, peripheral and enteric ...
The functions of pseudopodia include locomotion and ingestion: Pseudopodia are critical in sensing targets which can then be engulfed; the engulfing pseudopodia are called phagocytosis pseudopodia. A common example of this type of amoeboid cell is the macrophage. They are also essential to amoeboid-like locomotion.
In today's puzzle, there are seven theme words to find (including the spangram). Hint: The first one can be found in the top half of the board. Here are the first two letters for each word: CA. TR ...
Ke Huy Quan was a preteen when he was cast in Indiana Jones and Temple of Doom. Having fled Vietnam with his family as a child, he didn’t know who Harrison Ford and Steven Spielberg were when he ...
One or more pseudopodia may be produced at a time depending on the organism, but all amoeboid movement is characterized by the movement of organisms with an amorphous form that possess no set motility structures. [2] Movement occurs when the cytoplasm slides and forms a pseudopodium in front to pull the cell forward.
One cup of cooked lentils provides about 15 grams of fiber, “which helps regulate digestion, prevent constipation and support healthy bile production—a key factor in reducing the risk of ...