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Syphilis is transmitted primarily by sexual contact or during pregnancy from a mother to her baby; the spirochete is able to pass through intact mucous membranes or compromised skin. [ 3 ] [ 34 ] It is thus transmissible by kissing near a lesion, as well as manual , oral , vaginal , and anal sex .
Human embryonic development or human embryogenesis is the development and formation of the human embryo.It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development.
At the first stages of unconsciousness, breathing is often sufficient or even rapid, although the state of the person progresses towards a deep coma, sometimes accompanied by pulmonary edema, and finally cardiac arrest. A cherry red skin color that darkens may be present as the result of increased venous hemoglobin oxygen saturation.
Common symptoms present in the different types of leprosy include a runny nose; dry scalp; eye problems; skin lesions; muscle weakness; reddish skin; smooth, shiny, diffuse thickening of facial skin, ear, and hand; loss of sensation in fingers and toes; thickening of peripheral nerves; a flat nose from destruction of nasal cartilages; and changes in phonation and other aspects of speech ...
Ineffective folk remedies abounded in the medical literature of the ancient world. The physician Scribonius Largus prescribed a poultice of cloth and hyena skin; Antaeus recommended a preparation made from the skull of a hanged man. [140] Rabies appears to have originated in the Old World, the first epizootic in the New World occurring in ...
Timing is important to wound healing. Critically, the timing of wound re-epithelialization can decide the outcome of the healing. [11] If the epithelization of tissue over a denuded area is slow, a scar will form over many weeks, or months; [12] [13] If the epithelization of a wounded area is fast, the healing will result in regeneration.
When myelomalacia occurs, the damage done to the spinal cord may range from minimal to extensive. The spinal cord and the brain work together, making them the key components of the central nervous system. [5] Damage to this system affects specific functions of the body, primarily relating to the function of muscles.
There are five recognized stages of implantation in mammals, including two pre-implantation stages that precede the formation of the placenta. They are: migration and hatching, pre-contact, attachment, adhesion, and invasion. The first four stages are similar across the species with the process of invasion being variable.