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25 terms

Micro

thanks Mish
STUDY
PLAY
the body's Defenses
anatomical defenses
skin,mucus membrane, Cilia, Normal flora,Body responses
skin
First line of defense agaiinst organisms. acts as a physical and chemical barrier
muccous membrane
Works together with cilia
cilia
(hair) this is do, not all organism are let into the body(trapes them)
normal flora
No place for the organism to go or to attach
body response
Coughing,sneezing, voimiting, and diarrahra
Chemical Defenses
Body fluids, a)saliva b) bile c)gastric juices (highly acidic) d) sweat e) oil (suffocates organism) f) tears (lysosomes) flushes eyes
Lysosomes
Substance that will destroy gram positive (staining) bacteria found in tears.
Inferon
Naturally accruing substances produced in the body that will fight virus
Antibodies
Fights off whatever white blood cells are not able to
physiological Defenses
A)sweat-cool off the body b) phagocytosis c) peristalsis-waves like rhythmic contraction that force a material though a lymphatic b)lymphatic- (a) actually produces antibodies cells and certain WBC's in the bone marrow(b) cleans the lump fluid that goes back into the body (d)collateral cirulation (e) fever- increase in body temperature(a) slows growth of organism(b) increase in phagocytosis . Inflammation- body's response to injury.
Three parts of inflammatory process
a) to destroy the iirrtating or injurious agent and resverse it and it's products from the body b) to limit the extension of infection to the body c) mechanism of repair and replacement of damaged tissue
local effects seen in the with infection
a) inflammation a) redness b) swelling c) heat d) pain
general effects seen in the body with infection
a) fever b) fatigue c) tachycardia - increase in heart rate d) toxicity -scientific term for aches and pain e) increase in metabolic rate - when body is fighting infection, organism have to work harder f) leucoemia- decease in WBC count g)leucocytosis- increase in WBC count
Direct modes of transmission
(when an infections spread, more or less directly from person to person or animal to person)
Modes
a) physical contact (direct contact) b) sexual transmition d)placental ( mother to fetus)e) droplet infection(droplet spray) - infection of micooganism that are casted off in fine spray from mouth and nose during talking ,laughing, coughing( most common mode)
indicerct modes of transmission
Contaminationed formites( anything not living) b) contaminated food and water c) dirty hands d) dirt and filth e) droplet nuclei-particulars of dried secretions from the mouth and nose, that may float in the air for a considerate amount of time over long distances f) art hod vectors- insects (a) mechanical vector- an arthropod that holds the pathogen on their feet or other body part(b) Biological vector- an arthropod that bites a person and transmits the infected blood
Ports of entry
Mouth,nose, skin, placenta, urogenital track
ports of exit
Buccal secretions, nasal secretions,blood,pus,sputum, semen, vaginal secretions, tears,urine, feces
four factors that influence the current of infection
Immunity,virulence of organism,proper portal of entry, numbers of organism presnt
Bony incasements
Skull
Inflammation
The bodies response to injury, something's wronging there is inflammation. Three part to processs- localize the vascular and caller response at the site of injury. Body reaction , repair and restore back to normal
Three functions
To distory the entering injurious agent. Limit the extension to the body .repair and replacement of the damage tissue
Arthropod vector
a) mechanical vector- Arthropods(insects) that hold the pathogen on their feet or other parts of their body and accidentally transmit the pathogen b) biological vector- an arthropod that pathogen or carrier ingest some of the blood, another person and transmits the pathogen
Fever
Increase in temperature two benefits 1)slows the growth b) increases phagocytosis