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Pathophysiology CH-7
Mosby's Paramedic Textbook 3ED-R
110
Health Care
Undergraduate 1
09/25/2011

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Cards

Term
What are the four basic types of tissue
Definition
Epithelial tissue, connective tissue, Muscle tissue, Nervous tissue 
Term
What is the job of macrophages 
Definition
they injest cellular debris from injured cells 
Term
Of the four basic types of tissue, what type is blood?
Definition
Connective 
Term
What is the percentage of water weight for adults 
Definition
50%-60%
Term
What is osmosis 
Definition
It is the flow of fluid across a semipermeable membrane from a lower to a higher concentration
Term
True or false- Osmosis does require energy 
Definition
True- Becasue its going from a lower to a higher concentration it requires transport mechanisms that require energy
Term
Through what process does a cell become specialized( the cells ability to preform only certain tasks)? 
Definition
Cells become specialized through a process of differentation or maturation 
Term
What is it called when cells adapt to their environment to avoid and protect themselves form injury
Definition
Cellular adaptation
Term
True or false- When cellular adaption happens the cells are considered injured 
Definition
False. They are considered to fall between normal and injured states 
Term
What is Atrophy
Definition
is a decrease in cellular size
Term
What is Hypertrophy 
Definition
an increase in cell size
Term
What is hyperplasia
Definition
an excessive increase in the number of cells- formation of a callus 
Term
What is metaplasia 
Definition
a change from one cell type to another that is better able to tolerate adverse conditions- envoirmental conditions like smoking that change the bronchial lining to have less irritation 
Term
What is dysplasia 
Definition
abnormal changes in mature cells-- cells that are near cancer 
Term
What is the most common celluar injury 
Definition
Hypoxic injury 
Term
What are types of cellular injury
Definition
Hypoxic injury, Chemical, infectious, Immunologic and inflammatory, Injurious genetic factors, nutritional imbalance and physical agents 
Term
A loss of cytochromes would lead to what type of cellular injury
Definition
Hypoxic 
Term
What does virulence mean?
Definition
its a microorganisms ability to survive and reproduce in the human body, where they injure cells and tissues 
Term
What does pathogenicity mean
Definition

It is means the same as virulence 

 

Its a microorganisms ability to survive and reproduce in the human body where they injure cells and tissues

Term
Bacteria that make endotoxins are also known as...
Definition
pyrogenic bacteria
Term
What is bacteremia or septicemia 
Definition
a prolifereation (rapid growth) of microorganisms in the blood
Term
How do viruses affect the body on a cellular level 
Definition
they control the metabolic machinery of the host cells then use it to replicate the virus 
Term
What is a protein coat that encapsulates most viruses and allows them to resist phagocytosis
Definition
capsid coating 
Term
Where does viral replication occur 
Definition
with in the host cell 
Term
True or false- Viruses produce exotoxins and endotoxins
Definition
False 
Term
 Why do cells die during an inflammatory injury
Definition
They die because the cell membrane leaks potassium out of the cell and water rushes in. 
Term
What is osmosis 
Definition
it is the flow of fluid across a semipermeable membrane. 
Term
An ion with a positive charge is known as 
Definition
Cation
Term
An Ion with a negative charge is known as 
Definition
anion. 
Term
What is the most abundant cation in the ECF 
Definition
Sodium 
Term
What is the most abundant intracellular cation
Definition
Potassium
Term
What is active transport
Definition

it is the transport of substances against a concentration gradient, from areas of lower concentration to areas of higher concentration 

 

 

This requrires energy- osmosis 

Term
What is facilitated diffusion 
Definition
moves substances into and out of cells from an area of higher concentration to an area of lower concentration 
Term
As we get older, what happens to the percentage of water weight? 
Definition
It decreases 
Term
Where does the exchange of nutrients and metabolic end products take place
Definition
In the capillaries 
Term
What is Starlings hypothesis
Definition

It describes the movement of fluid back and forth across the capillary wall AKA net filtration 

 

 

Net filtration = forces favoring filtration- forces opposing filtration 

 

Term
What medical condition results from increased osmotic movement of water into the interstital space 
Definition
Edema
Term
What is localized edema
Definition
its usually limited to an injury site or an organ system 
Term
How is generalized edema charcterized 
Definition
It is characterized by more widespread swelling and is usually noted in the legs and ankles. 
Term
What diseases are the biggest causes of generalized edema
Definition
Heart, liver, and kidney disease 
Term
What is the primary role of antidiuretic hormone (ADH)
Definition
Its the bodies way of maintaining water balance 
Term
What are the three receptors that control water balance and water reabsorption 
Definition

Osmoreceptors 

Baroreceptors 

volume sensitive receptors 

Term
What are osmoreceptors 
Definition
they are hypothamlamic neurons that can cause an individual to feel thirsty
Term
how does ADH work in the kidneys
Definition
it works by preventing water loss through the distal renal tubules and collecting ducts of the kidneys 
Term
What hormone controls the regulation of sodium balance in the body 
Definition
Aldosterone (secreted by the adreanal cortex) 
Term
What mineral is the major ECF anion
Definition
Chloride 
Term
What organ does renin come from 
Definition
kidneys 
Term
describe the process of making ADH
Definition
renin is excreated by the kidneys and the liver excretes angiotensinogen to form angiotensin I. It goes through the lungs to form angiotensin II and stimulates the adrenal cortex to realease aldosterone. 
Term
What horomone is a potent vasoconstrictor
Definition
Angiotensin II 
Term
What does the natriuretic hormone do
Definition
It promotes loss of sodium loss through the kidneys
Term
How do hydrogen ions relate to pH
Definition
The more hydrogen atoms increases the acid level (LOW NUMBER) 
Term
It was is ment by a bivalent cation
Definition
its an cation with two postive charges I.E calcium 
Term
What is normal blood pH
Definition
7.35-7.45
Term
How does Carbonic Acid- Bicarbonate Buffering system work? 
Definition
Sodium Bicarbonate bonds with hydrogen atoms to neturalized the acid until it reaches the respiratory system and then the acid is blow off by the lungs
Term
Where does protein buffering mainly take place 
Definition
its mainly an intracellular buffer system. 
Term
How does renal buffering work
Definition
the kidneys can excrete hydrogen atoms, reabsorb bicarbonate, and excrete ammonium ions which carry with it hydrogen 
Term
How can a patient get respiratory acidosis
Definition
a patient can get it by respiratory depression or an inability for the lungs to excrete carbon dioxide efficiently 
Term
How can a patient get metabolic acidosis 
Definition

Lactic acidosis- cells that are inadequately perfused

 

Diabetic Ketoacidosis- a body has a lack of insulin and metabolizes fatty acids for energy 

 

Renal failure-kidneys fail to eliminate hydrogen ions

 

Ingestion of toxins-ingestion of large amounts of asprin

Term
how can a patient get respiratory alkalosis
Definition
hyperventilation often seen in early stages of shock, and sepsis. 
Term
how can a patient develop metabolic alkalosis
Definition
results from a loss of hydrogen ions primarly from ingestion of large amounts of absorbable base sodium bicarbonate(baking soda) or calcium carbonate(Tums) 
Term
What are the compensatory mechanisms fo hypoperfusion
Definition
catecholamine release, creation of aldosterone and renin-angiotensin, shift of intersitital fluid and splenic discharge 
Term
What are the 3 factors that equate to overall cardiac output
Definition
strength of contraction, rate of contraction and preload(venous return) 
Term
What is a negative feedback mechanism 
Definition
it is any mechanism that tends to balance a change in a system
Term
What are the negative feed back mechanisms that the body uses to control blood pressure 
Definition
baroreceptors reflexes, chemoreceptor reflexes, the CNS ischemic response and hormonal mechanisms
Term
What is oliguria 
Definition
decreased urine output
Term
What do chemoreceptors reflexes do
Definition
They play a large part in sending signals the brain to increase breathing, secondly they can cause vaso constriction
Term
Where are baroreceptors reflex endings located and what are they used for 
Definition

they are located in the carotid sinus and the aortic arch

 

They are used to help control BP through the sympatetic and parasypathtic system

Term
What are the two different layers of the adrenal glands
Definition
Adrenal cortex and the medulla
Term
Renin is released by what organ
Definition
kidneys
Term
What is the primary role of aldosterone 
Definition
It acts on the kidneys to conserve sodium and water 
Term
What is MODS and how is it classified 
Definition
MODS is Multiple organ dysfunction syndrome and is classified by the progressive failure of two or more organ systems
Term
What are the three major causes of MODS
Definition
Septsis, major trauma, and burn injuries 
Term
What is the bodies first line of defense 
Definition
External barriers- Skin, and mucous membranes of the respratory, lungs, nose, ect
Term
What is the bodies second and third line of defense 
Definition

2nd- inflammatory response 

3rd- immune response 

Term
White blood cells are also known as
Definition
leukocytes 
Term
What is Phagocytosis 
Definition
Its the process by which leukocytes engulf, digest and destroy pathogens
Term
Exudate is also known as? 
Definition
Pus
Term
How does a patient develop acquired immunity 
Definition
through repeated exposure to a specific antigenic agent or pathogen
Term
What is natural immunity acquired 
Definition
at birth 
Term
How is passive immunity acquired 
Definition

There are two ways

 

Its acquired before birth through the mother passing on the same antibodies she has

 

Passed on through mothers breast milk

Term
How do B-cell lymphocytes work 
Definition
They generally attack bacteria and kill them with the use of immunoglobulins and antibodies 
Term
How do T-cell lymphocytes work 
Definition
They generally attack virus habited cells. The T-cell itself directly attacks the cell by releasing a chemical that weakens the cell membrane causing it to die
Term
What do helper T-cells do
Definition
Helper T-cells recongnize bacteria and virus habited cells and alert either T-cells or B-cells to kill it. 
Term
What type of lymphocyte is responsible for long term immunity 
Definition
B-cells AKA memory cells 
Term
The cell-mediated immun response uses what type of lymphocyte 
Definition
T-cell
Term
What blood type is known as the universal recipient
Definition
Type AB 
Term
What blood type is known as the universal donor 
Definition
Blood type O 
Term
What is an Allergy 
Definition
An exaggerated immune response 
Term
What is Autoimmunity 
Definition
It is when lymphocytes attack its own cells. 
Term
What immunoglobulin is responsible for hayfever, asthma, and Anaphylaxis
Definition
IgE 
Term
What is the most common Immunoglobulin
Definition
IgG
Term
What is the only immunoglobulin to cross the placental barrier and is found in breast milk 
Definition
IgG 
Term
What is the purpose of cortisol 
Definition
cortisol stimulates gluconeogenesis(release of glucose) it also supressess reproduction of lymphocytes 
Term
What happens to a cell in a hypertonic solution and when is it used
Definition
It will shrink, it is used for trauma situations
Term
What is cortisol also known as 
Definition
hydrocortisone 
Term
What happens when a patient has Isoimmunity
Definition
The patient rejected a blood transfusion or organ donation
Term
What are the stages of stress 
Definition
Alarm, resistance or adaptation, and exhaustion 
Term
What is Kinin 
Definition
Kinin is a serum protein that causes vasodilation and increases vascular permeability 
Term
Who is the doctor that came up with the basis for the General adaptation syndrome 
Definition
Selye 
Term
What happens when the exhaustion stage is prolonged and adaptation mechanisms are exhausted 
Definition
Adrenal faiure. 
Term
When happens when the adrenal glands go into adrenal failure 
Definition
They no longer produce catecholamines- epinephrine, nor-epinephrine and dopamine
Term
What do alpha 1 receptors stimulate
Definition
Smooth muscle I.E blood vessels and increased glycogenolysis
Term
What do alpha 2 receptors stimulate 
Definition

Smooth muscle relaxation 

 

its a negative feed back mechanism for alpha 1. It inhibits        further release of norepinephrine 

Term
What is the primary neurotransmiter 
Definition

Acetylcholine

Term
what happens to a cell in a hypotonic solution 
Definition
The cell will swell 
Term
When is hypotonic solutions used 
Definition
they are used for dehydration and supply the patients cells with calories 
Term
What mineral is the major intracellular anion 
Definition
Phosphate 
Term
What mineral is the major extracellular anion 
Definition
Chloride 
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