Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download tactile corpuscle
Transcript
Integumentary Lab Biol 2401 Exteroreceptors of Integumentary System • Merkel cell – exteroreceptor for light or discriminative touch • tactile corpuscle = Meisner's corpuscle – exteroreceptor for light or discriminative touch • lamellated corpuscle = Pacinian corpuscle – exteroreceptor for vibration • root hair plexus – exteroreceptor for fine touch detecting external movements of the hair shaft Yellow Nail Syndrome • Yellow discoloration in your fingernails may result from a respiratory condition, such as chronic bronchitis, or from swelling of your hands (lymphedema). • In yellow nail syndrome, nails thicken and new growth slows, resulting in discoloration. • Nails affected with this condition may lack a cuticle and may detach from the nail bed in places. • Yellow nails may also result from any condition that causes the growth of your nails to slow down. Nail Clubbing • Clubbing occurs when the tips of your fingers enlarge and your nails curve around your fingertips. • This condition results from low oxygen levels in your blood and could be a sign of lung disease. • Clubbing is also associated with inflammatory bowel disease and liver disease. Spoon Nails (Concave) • Spoon nails (koilonychia) are soft nails that look scooped out. • The depression usually is large enough to hold a drop of liquid. • Spoon nails may be a sign of iron deficiency anemia. Terry’s Nails • Nails look opaque, but the tip has a dark band. • Sometimes this can be attributed to aging. In other cases, it can be a sign of serious illness, such as: • Congestive heart failure • Diabetes • Liver disease • Malnutrition Beau’s Nails • Nails have indentations that run across them. • They can appear when growth at the area under your cuticle is interrupted by injury or severe illness. • Diseases or illnesses associated with Beau's lines include: • Uncontrolled diabetes • Circulatory diseases, such as peripheral artery disease • Illness associated with a high fever, caused by pneumonia, scarlet fever, mumps or measles • Malnutrition Onycholysis • Fingernails become loose and can separate from the nail bed. • If your nails show signs of detaching, this may be associated with: • Injury or infection • Thyroid disease • Drug reactions • Reactions to nail hardeners or acrylic nails • Psoriasis
