Healthcare test for body systems Flashcards
Prokaryotes
single celled organisms, lack a nucleus. Bacteria is an example
Eukaryotes
Multicelled organisms that contain a nucleus. Fungus is an example
Microbes
Organisms too small to be seen with eyes
Bacteria
one celled microbe that can be harmful or helpful in your immune system
Virus
smallest microbe, not alive like bacteria. It can become “alive” once it gets injected into a cell and uses it as a host
vaccines often prevent them
communicable
Anaerobes
Bacteria that doesn’t need oxygen to live (like tetanus and gangrene)
Pathogen
Disease causing microorganisms
Aerobes
bacteria that needs oxygen to live
Facultative anaerobes
Bacteria that can live with or without oxygen
Host
living organisms that provides nourishment for some microbes
vector
something that carries and spreads pathogens (caused by viruses or protozoa) eg. mosquito
parasite
living organism that lives off another organism and uses it as a host to get nourishment eg. tapeworm, protozoa
peristology
study of parasites
Differences In Illnesses
Bacterial Infections = antibiotics
Viral Infections = immune system fights, treat symptoms
Fungal Infections = antifungal creams & antifungal pills
Parasites = need a host, cannot survive on surfaces. Medications will be prescribed which kill the parasite
Illnesses Caused by Bacteria
There are many illnesses that are a result of bacteria.
Antibiotics is the medicine that is used to treat bacterial infections.
Antibiotics = against life
Antibiotics keep bacteria from reproducing and multiplying by killing them
Streptococci
streptococcus
Type of bacteria
found in chains microscopically
-communicable bacteria that can cause strep throat, septicemia (blood poisoning), scarlet fever
-releases a toxin (poison)
Staphylococci
staphylococcus
Type of bacteria
Common communicable bacteria that forms boils and impetigo rash on people’s skin from open wounds
-Present microscopically in clumps (like grapes)
Bacilli
Type of bacteria
Rod shaped bacteria
-causes botulism a deadly food poisoning
from infected animals
-air borne infectious bacteria that can also
be associated with pneumonia, endocarditis,
and motor vehicle accident infections
Cholera Vibrio
Type of bacteria
-comma shaped bacteria (hot dog with string)
-common is Asia, found in drinking water or shellfish
-releases toxin in intestines that causes
body to produce excess water then diarrhea
Diplococcus
Type of bacteria
-bacteria that appears in 2 round cells
- an overall type of bacteria that different forms which result in different types of infections
-ex. are in pneumonia, gonorrhea, meningitis
Tetanus
Type of bacteria
-bacteria that lives on rusty metal
-if punctures skin, can affect the brain and nervous system and cause lockjaw
-tetanus vaccine is given every 10 years but if rusty metal breaks skin, vaccine should be given asap
-also responsible for tuberculosis and leprosy
Spirochete
Type of bacteria
-spiral bacteria that can cause the fatal
sexually transmitted infection Syphillis
-attacks the brain and nervous system
Sexually Transmitted Infections
caused by bacteria or viruses
Examples include: Gonorrhea- (most common communicable STI) or chlamydia or syphilis (deadly spirochete)
Helpful bacteria
helps break down dead living organisms for carbon cycle
-helpful bacteria in living things helps fight germs and prevent infection
(in saliva, on skin and in gut/intestines (probiotics and yogurt help here)
spore formation
when bacteria is in resting stage and form a protective coat and is resistant to antibiotics or death
vegetative formation
when bacteria is in active stage and do not form a protective coat and is non-resistant to antibiotics, can die
deterioration
aging of tissues and cells; regeneration slows down
dust
made mostly from dead skin and hair cells; most effective carrier of microbes
Fungi
- plants that lack chlorophyll like mushrooms, yeast and mould
- are mycotic: infection or disease as a result of fungus; often on dermal surfaces
-eukaryotes, lack nucleus - are decomposers, used in making drugs like penicillin, opiates, and alcohol
Protozoa
-one celled animal cell with no cell wall eg. amoeba, paramecium
-have legs and tails and some are pathogenic parasites eg. Plasmodium causes a world wide debilitating disease called Malaria
Type of parasite
Gut worms
Type of parasite
(tapeworm, hookworm) tapeworms can grow up to 50 feet and can be removed through anus, cause extreme hunger with diarrhea and vomiting (infestation)
Pinworms
Type of parasite
found in stools. Common in children
Trichinella spiralis
Type of parasite
roundworm found in cyst
of a pig (in humans thru pork)
rickettsias
Type of parasite
skin mites or scabies,
hair and body lice, ticks (lyme disease), fleas, caused by it (typhus too)
ERYTHROCYTES (RED BLOOD CELLS)
-small biconcave circular cells that give us oxygen in blood
-lack a nucleus
-makes up 45% of our blood
- 4.5-6 million/cubic millimeter in our bodies
-special protein hemoglobin helps carry oxygen from lungs to rest of body Mineral that helps hemoglobin carry oxygen is iron
LEUKOCYTES (WHITE BLOOD CELLS)
-larger cells that fight infection for immune system
-have a nucleus; 4000-10000 /cubic millimeter in the body
-many specific types with different roles
Cross Infection
Type of disease transmission
the passage of microorganisms from one person to another eg. sneeze
Cross Contamination
Type of disease transmission
passage of microorganisms from one person or inanimate object to another eg. cough on pen then share it
Direct Transmission
Type of disease transmission
pathogens transferred through direct contact with infectious lesions, blood, saliva
Indirect Transmission
Type of disease transmission
pathogens transferred through direct contact with contaminated objects like doorknobs
Vector transmission
Type of disease transmission
pathogens transferred from one host to another through different ways eg. mosquito is carrier and bites human
Sternutation
Type of disease transmission
sneezing which is a common type of direct transmission
Zoonotic
infections spread between animals and people eg rabies, covid
Sterilization
kills ALL living things (germs) on an object
Autoclave
machine that uses high pressure steam to sterilize medical equipment
Disinfection
process of killing MOST living things on objects
Disinfectant
product that kills most living things on an object (eg. Lysol or alcohol, bleach, vinegar)
Masks, shields, goggles, gloves or gowns
(PPE) Personal Protective Equipment that limits the spread of germs through air
Asepsis
condition where no disease causing organisms are present
pasteurization
heating milk from cow to 145 F then allowing to cool, to kill bacteria before consumption
diagnosis
process of determining the nature of an illness
prognosis
result or info from diagnosis, then prescription or plan
therapy
treatment prescribed by a doctor (eg. physiotherapy)
chemotherapy
chemical treatment given to kill diseased cells
infection
invasion of body by disease producing micro-organisms
communicable
contagious, germs easily transferred
incidence
rate of occurrence of disease
congenital
disease present at birth
Antiseptic
chemical used on living tissue, to kill germs
idiopathic
disease with unknown cause
microbiology
study of very small living organisms
bacteriology
study of bacteria
etiology/epidemiology
study of causes of disease
protozoology
study of protozoa (one celled animal cells)
pathology
study of disease
peristology
study of parasites
physiology
study of the function of living organisms
anatomy
study of the structure of living organisms
Disease
the impairment or change from the normal state which prevents some of the tissues and organs from carrying on their required function
Some diseases can be communicable (contagious) and some not.
can also be caused by environmental factors like lack of sunshine (vitamin D) egs. Rickets or osteoporosis; or poor nutrition called malnutrition.
symptoms
Changes in body function that are experienced by a patient. Eg. nausea, pain
Signs
things you can see, hear from a patient eg. pale skin, high breathing
asymptomatic
Some diseases can lack symptoms but can still be serious
syndrome
Sign and symptoms that occur together (eg. flat forehead in Down Syndrome)
acute
diseases/ illnesses of short duration but can still be deadly
chronic
diseases/ illnesses of long duration (or over time) and can be deadly
Predisposing
factors play a role like where you live and what chemicals you are exposed to