Chapters 3,4,&5 63954
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This 8 page Class Notes was uploaded by Alyssa Vasquez on Friday February 13, 2015. The Class Notes belongs to 63954 at San Francisco State University taught by Heather Murdock in Spring2015. Since its upload, it has received 110 views. For similar materials see BIO 100 in Biology at San Francisco State University.
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Date Created: 02/13/15
Chapter 4 21115 Immune System Responses 1 Barrier System to help us keep pathogens out and if they do get in the expel them quickly 0 Tightly packed skin cells eyebrows eyelashes nose hair ear wax saliva antibacterial enzymes physiological responses cough sneeze watery eyes runny nose vomiting diarrhea 2 Nonspeci c immune response white blood cells protein to attack any pathogens 0 Ex Macrophages compliment protein mast cells NK cells 3 Speci c immune responses target a speci c pathogen w TCells antibodies memory BCells vaccinations boost these helper TCells Immune System Disorders Allergies when the body has an immune response to a nonharmful pollen dust pet dandruff food bee sting thinking that it is a pathogen Mast cells secrete histamines prostaglandin to cause anaphylactic shock 2 Autoimmune Disease the immne system attacks the bodies own healthy cells thinking that these cells are a pathogen a Diabetes type1 this is when the body attacks special cells in the pancreas that makes hormone that helps regulate blood glucose levels by bringing glucose into cells to make energy by cellular respiration 3 lmmunodeficiency immune system is weakened not working properly or lacking all together 0 HIV l virusattacks immune system helper Tcells macrophages no vaccination O STl s Chlamydia l bacterial treat with antibiotics Gonorrhea l bacteria Syphilis l bacteria Herpes l viral 4 Main Tissue Types 1Epithelial outside of body and lining the internal surfaces of the body inside organs also make out glands l endocrine glands l secrete hormones EiMilks sweat sebrum saliva Exocrine glands have ducts to deliver secretion 2 Connective Tissue Lidaments bone to bone Tendons muscle to bone muscle to muscle Cartilage skin to bone joints to bone blood lymph fat 3 Muscle Tissue 3 types skeletal smooth cardiac 4 Nervous Tissue brain nerves made up of 2 cells l neurons and glial cells Skin largest organ epithelial on the outside connective tissue layers working together 0 TWO LAYERS OF SKIN 1 Epidermis mostly dead cells at the top with keratin protein at the bottom of the epidermis are melanocytes these cells make melanin l pigment that protects us from UV radiation l causes skin cancer 0 3 Types of Cancers o Squamous o Basal o Melanoma most dangerous because its near blood vessels can move to another one UV RADIATION 2 types UVA more likely to mutes DNA to cause cancer UVB burns outside of the skin 0 We do need a certain type of UV radiation it triggers us to make vitamin D can get from foods too which helps us absorb calcium from our foods 0 UV radiation is also important for our mood it triggers an increase in serotonin l feels good neurotransmitter 2 Dermis living cells epithelial and collagen elastin also contains blood vessels glands nervous tissue 3 vaodermis layer of fat insulation cushioning protection adipose Ussue
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