BIOL 2140 Exam 2 questions with answers

BIOL 2140 Exam 2 questions with
|\ |\ |\ |\ |\ |\




answers

Basal Cell Skin Cancers - CORRECT ANSWERS ✔✔-affects
|\ |\ |\ |\ |\ |\ |\ |\



basal layer (5th layer) of the skin
|\ |\ |\ |\ |\ |\




-more common, least malignant, rarely metastasizes
|\ |\ |\ |\ |\




-slow growing-no itch or pain
|\ |\ |\ |\




-tiny dome shaped nodules-ulcer in center
|\ |\ |\ |\ |\




-99% cure rate
|\ |\ |\




-cause: UV Radiation (caucasians), X rays, chronic skin
|\ |\ |\ |\ |\ |\ |\ |\



ulcers


Squamous Cell Cancer - CORRECT ANSWERS ✔✔-in
|\ |\ |\ |\ |\ |\ |\



keratinocytes of stratum spinosum |\ |\ |\ |\




-raised bump with central crusting ulcer
|\ |\ |\ |\ |\




-small and scaly-red
|\ |\




-fast growing and metastasizes
|\ |\ |\ |\




-very curable if removed early
|\ |\ |\ |\




-cause: UV Radiation (caucasians), X rays, chronic skin
|\ |\ |\ |\ |\ |\ |\ |\



ulcers

,Melanoma - CORRECT ANSWERS ✔✔-most dangerous, |\ |\ |\ |\ |\ |\



10% of skin cancers
|\ |\ |\




-proliferating melanocytes |\




-only 1/3 developed from moles
|\ |\ |\ |\ |\




-most are spontaneous and metastasize rapidly (early
|\ |\ |\ |\ |\ |\ |\



detection essential) |\




-> 4mm thick =poor survival
|\ |\ |\ |\




ABCDE - CORRECT ANSWERS ✔✔A=Asymmetry B=Border
|\ |\ |\ |\ |\



Irregularity C=Colors D=Diameter
|\ |\ |\




E=Elevation


Stage 0 of Melanoma - CORRECT ANSWERS ✔✔curable,
|\ |\ |\ |\ |\ |\ |\ |\



top layer of the epidermis
|\ |\ |\ |\




Stage 1 of Melanoma - CORRECT ANSWERS ✔✔dermis
|\ |\ |\ |\ |\ |\ |\ |\



invaded


Stage 2 of Melanoma - CORRECT ANSWERS ✔✔tumor is
|\ |\ |\ |\ |\ |\ |\ |\ |\



approx 4mm thick |\ |\




dermis and subcutaneous fat |\ |\ |\




Stage 3 of Melanoma - CORRECT ANSWERS ✔✔lymph
|\ |\ |\ |\ |\ |\ |\ |\



nodes in the skin affected|\ |\ |\ |\

, Stage 4 of Melanoma - CORRECT ANSWERS ✔✔metastasis
|\ |\ |\ |\ |\ |\ |\
|\



-lung, liver, brain |\ |\




Burns - CORRECT ANSWERS ✔✔-tissue damage by heat,
|\ |\ |\ |\ |\ |\ |\ |\



electricity, radiation, chemicals |\ |\




problems: fluid loss (shock) and infection |\ |\ |\ |\ |\




First Degree Burns - CORRECT ANSWERS ✔✔-only
|\ |\ |\ |\ |\ |\ |\



epidermis affected |\




-red, pain, swelling|\ |\




-sunburn is a common cause, 2-3 day repair |\ |\ |\ |\ |\ |\ |\




Second Degree Burns - CORRECT ANSWERS ✔✔-epidermis
|\ |\ |\ |\ |\ |\



and the upper dermis affected
|\ |\ |\ |\ |\




-red, pain, swelling and blisters
|\ |\ |\ |\




-3 to 4 week repair
|\ |\ |\ |\




Third Degree Burns - CORRECT ANSWERS ✔✔-epidermis,
|\ |\ |\ |\ |\ |\ |\



dermis, and often the hypodermis is affected
|\ |\ |\ |\ |\ |\




-tissue regeneration is too slow, grafting is necessary
|\ |\ |\ |\ |\ |\ |\ |\




-can cause suffocation in the facial area due to swelling of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



the airways
|\ |\